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Left

2019-08-18 00:05:19 百科
Left

Left

英语单词,leave的过去式和过去分词。

adj. 左边的;左派的;剩下的

adv. 在左面

n. 左边;左派;激进分子

基本介绍

  • 中文名:Left
  • 外文名:Left
  • 定义:leave的过去式和过去分词
  • 解释:左边的;左派的;剩下的

Left

Left 英音:[left]美音:[lɛft]
功能得到字元串左部指定个数的字元。
语法Left (string,n)
参数string:string类型,指定要提取子串的字元串n:long类型,指定子串长度返回值String。函式执行成功时返回string字元串左边n个字元,发生错误时返回空字元串("")。如果任何参数的值为NULL,Left()函式返回NULL。如果n的值大于string字元串的长度,那幺Left()函式返回整个string字元串,但并不增加其它字元。
例如,在学生课表course中,分别有cno,cname,cpno,credit四列。其中有一项记录为:1,资料库,5,4。在SQL分析器中输入:
INSERT course
(cno,cname,cpno,credit)
select'0001'+left(cno,1),cname,cpno,credit
from course
go
此时course表中会多出一条记录:00011,资料库,5,4。

LEFT

根据所指定的字元数,LEFT 返回文本字元串中第一个字元或前几个字元。
LEFTB 基于所指定的位元组数返回文本字元串中的第一个或前几个字元。
要点 函式 LEFT 面向使用单位元组字元集 (SBCS) 的语言,而函式 LEFTB 面向使用双位元组字元集 (DBCS) 的语言。您计算机上的默认语言设定对返回值的影响方式如下:
  • 无论默认语言设定如何,函式 LEFT 始终将每个字元(不管是单位元组还是双位元组)按 1 计数。
  • 当启用支持 DBCS 的语言的编辑并将其设定为默认语言时,函式 LEFTB 会将每个双位元组字元按 2 计数,否则,函式 LEFTB 会将每个字元按 1 计数。
支持 DBCS 的语言包括日语、中文(简体)、中文(繁体)以及朝鲜语。
语法
LEFT(text,num_chars)
LEFTB(text,num_bytes)
Text 是包含要提取的字元的文本字元串。
Num_chars 指定要由 LEFT 提取的字元的数量。
  • Num_chars 必须大于或等于零。
  • 如果 num_chars 大于文本长度,则 LEFT 返回全部文本。
  • 如果省略 num_chars,则假设其值为 1。
Num_bytes 按位元组指定要由 LEFTB 提取的字元的数量。

英语单词

left

(leave的过去式和过去分词)
left
形容词 a.
⒈左方的;左侧的[Z][B]
Some people write with their left hand.
有些人用左手写字。
⒉(常大写)(政治上)左派的;左翼的
副词 ad.
⒈在左边;向左
Walk three blocks and then turn left at the corner.
走过三个街区然后向左转。
名词 n.
⒈左,左边[the S]
John was seated on her left.
约翰坐在她的左边。
⒉(常大写)左派;激进分子们[the S][G]
The left oppose the tax increase.
左翼人士反对增税。
⒊(拳击中的)左拳[C]
动词 v.
⒈造成
When this irregular breath hits your voice box,you're left with a big hiccup.
当不规则的气流撞击你的喉咙,就会造成你打一个大大地嗝。

网路释义

Left
⒈左;左侧;左视图
3DMAX中英文对照(3dmax命令)大全...
Left左;左侧;左视图
⒉跑动方向键左
按键翻译(锁定防守篇) - 〖NBA2K9...
Left 跑动方向键左
left
⒈左后卫
体育英语《体育英语辞彙和术语》 - 英语学...
left 左后卫

有道词典

left[left] vt.
leave的变形
left[left] adj.
⒈左的;左边的;左侧的;左手的;左半身的;左方的
⒉左岸的
⒊左翼的;左派的;“左”倾的;急进的;激进的
n.
⒈左边;左侧;左部;[ the left]左方
⒉左侧的东西
⒊向左转;左转弯
⒋[ the left] 【政治】左派;激进派议员(在欧洲立法机关中常坐在议长席左侧,故名)
⒌【军事】左翼
⒍[美国英语](船的)左舷
adv.
向左边;在左边
left[left] leave的过去式和过去分词
leave[li:v] vt.
1. 离开,离去;从…走开;脱离:例:He has left Beijing for London.
他已经离开北京到伦敦去了。
He left his hometown and looked for a job in town.
他离开家乡到城里找工作。
2. 留;剩下:例:She left some of the food for her husband.
她给丈夫留了一些吃的。
3. 留下;将…留下:例:The secretary asked him to leave his telephone number.
秘书要他把电话号码留下来。
4. (死后或离开后)把…留给;遗赠给:例:His uncle left $10 000 in the will.
他舅舅在遗嘱中留下10 000美元。
5. 死后留下;遗留下:例:He left a widow and two children.
他死后撇下寡妻和两个孩子。
6. 留下;丢下;忘带:例:I left my dictionary in the library.
我把词典丢在图书馆里了。
7. 委託;交託;交由…照管:例:You'd better leave this up to me.
你最好把这件事交给我办吧。
He left his son to his sister.
他把儿子交由他姐姐照管。
8. 搁置;不管;忽略;暂不解决:例:We'll leave this item till the next meeting.
我们把这个议题放到下次会议讨论。
9. 辞去(工作);捨弃;停止;拒绝:例:take it or leave it
取捨悉听尊便
He left medicine for law.
他放弃医学改学法律。
10. 剩余;剩下:例:3 from 7 leaves 4.
7减3余4。
15 minus 5 leaves 10.
15减5得10。
11. 使…处于(某种状态);听任;让:例:Leave the windows open. It's so stuffy here.
让窗子开着,这儿太闷热了。
The earthquake left them homeless.
地震让他们无家可归。
12. [方言、俚语]让;允许:例:Leave them go.
让他们走。
vi.
离去,离开;出发,动身:例:When we got to the railway station,the train had left.
我们到火车站时,火车已经开走了。
He leaves for work at 7 every morning.
他每天早上7点钟离家去上班。
变形:
vt.leftleaving
leftn.
⒈location near or direction toward the left side; i.e. the side to the north when a person or object faces eastshe stood on the left
⒉those who support varying degrees of social or political or economic change designed to promote the public welfare
⒊the hand that is on the left side of the bodyjab with your left
⒋the piece of ground in the outfield on the catcher's leftthe batter flied out to left
⒌a turn toward the side of the body that is on the north when the person is facing easttake a left at the corner
adj.
⒈being or located on or directed toward the side of the body to the west when facing northmy left hand left center field the left bank of a river is bank on your left side when you are facing downstream
⒉not used upleftover meatloaf she had a little money left over so she went to a movie some odd dollars left
⒊intended for the left handI rarely lose a left-hand glove
⒋of or belonging to the political or intellectual left
adv.
toward or on the left; also used figurativelyhe looked right and left the political party has moved left

句型

例句展示
To live in the hearts ofthose left behind is not to die
活在后人心,虽死而犹生
Mr. Brown racked his Braintrying to remember where he left thewallet.
布朗先生拚命思索,想记起他把钱包放在什幺地方了
I was left cooling my heels out side your home for twohours
我在你家门外足足等了两个小时
They rolled up the moneyand left through the Back gate in a tearinghurry.
他们十分仓促地捲起钱就从后门逃走了
I believe Mary was left to the tender mercies of her stepmother.
我相信玛丽受到了后母的虐待
Who would like tofeel left out at such a function?
在这们的场合上有谁会愿意受到冷落呢?
I let out a parting shotand left
我说了一句气话就离开了
Why should I be left holding the Baby alone?
为什幺把这个苦差事留给我一个人乾
He had nothing left to desire in life
他的生活已经是完美无缺了
Let not thy left hand know what thy right hand doeth.
不要让你的左手知道你的右手所做的事(行善不欲人知)。
George took all the moneyaway and left hiscompanions high and dry,with nothing to Buy the tickets.
乔治带走了所有的钱,把他的同事抛弃了,连买车票的钱也没有
"When someone foundthat the police were coming,he took to his heels and left the others in the lurch"
当有人以现警察来了的时候,他拔腿就跑而对其他的人却弃之不管了
"Industry if fortune'sright hand,and frugality her left"
勤勉是幸福的右手,节俭是幸福的左手
"When I fond that astranger began to make a pass at me,I gave him a stern look and left"
当一个陌生男子开始向我调情时,我瞪了他一眼就离开了
"From the doorway,hegave a parting shot to his mother andleft"
站在门口,他冲着母亲说了一句气话然后就走了
He left his gun outside so as not to frighten hiswife.
他把枪放在外面以免惊吓他的妻子。
Go down the first turningon the left until you come to a tallbuilding.
在第一条横马路左拐弯,然后一直走到一座高楼处。
Differences of opinionamong committee members cannot be resolved and are left unresolved for a long time
委员间意见分歧的事亦无由解决,并且听任这些分歧长期地不加解决。
Turn fight and you will seethe supermarket on your left.
向右拐你就会看到那个超级市场在你左边。
I left my belongings with this grand-motherlyfigure and entered into this magnificent hall of learning.
我把我的东西留给那祖母般的工作人员,进入了那宏大的学习之厅。
以上来源于: WordNet
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