小宝贝真紧校园强h_二区免费视频_91免费视_九一精品一区_69热国产视频_在线免费看毛片

单词
subtract
英 [s?b'tr?kt] 美[s?b'tr?kt]
基本信息
  • vt. 减去;扣掉
CET4TEM4IELTSGRE考研TOEFLCET6低频词常用词汇

词态变化

第三人称单数:?subtracts;过去式:?subtracted;过去分词:?subtracted;现在分词:?subtracting;名词:?subtraction;

助记提示

1、sub- + tract-.

中文词源

subtract 减

sub-,在下,向下,-tract,拉,词源同 attract,contract.引申数学名词减,减去。

英文词源

subtract
subtract: [16] To subtract something is etymologically to ‘pull it away’. The word comes from subtractus, the past participle of Latin subtrahere ‘pull away’. This was a compound verb formed from the prefix sub-, usually ‘under’ but here used in the sense ‘away’, and trahere ‘pull’ (source of English traction, tractor, trait, etc). The strictly mathematical use of the word is a post-Latin development.
=> contract, retract, traction, tractor, trait
subtract (v.)
1530s, "withdraw, withhold, take away, deduct," a back-formation from subtraction (q.v.), or else from Latin subtractus, past participle of subtrahere "take away, draw off." Related: Subtracted; subtracting. Mathematical calculation sense is from 1550s. Earlier verb form was subtraien (early 15c. in the mathematical sense), which is directly from the Latin verb.
Here he teches te Craft how tou schalt know, whan tou hast subtrayd, wheter tou hast wel ydo or no. ["Craft of Numbering," c. 1425]

双语例句

1. Please subtract a quarter of the money for your own use.
请从你的零用钱中扣除四分之一.

来自《简明英汉词典》

2. Subtract four from nine and you have five.
九减四得五.

来自《现代汉英综合大词典》

3. In their first year at school, most children learn to add and subtract.
入学第一年, 多数孩子都学加减法.

来自《简明英汉词典》

4. When you subtract two numbers, you subtract a subtrahend from a minuend.
当你作两个数的减法时, 你用一个被减数去减另一个减数.

来自辞典例句

5. The little girl has begun to learn to add and subtract.
这小女孩已在学做加减法了.

来自辞典例句

subtract相关单词
主站蜘蛛池模板: 女网址www女大全小 女网址www女高清中国 | 亚洲精品九色在线网站 | 午夜久久久久久禁播电影 | 久久久婷 | 2020年最新国产精品视频免费 | 三级视频中文字幕 | 伊人久久精品无码av一区 | 国产白丝jk捆绑束缚调教视频 | 久久有精品 | 黄色毛片在线看 | 国产人妻精品无码av在线 | 午夜免费福利片观看 | 在线免费亚洲 | 国产精品爽爽久久久久久竹菊 | 国语对白xxxx中国妞xxxx | 欲香欲色天天综合和网 | 亚洲国产精品久久久天堂麻豆 | 亚洲精品国产福利一区二区三区 | 激情内射日本一区二区三区 | 妞干网这里只有精品 | 麻豆成人久久精品二区三 | 国产精品免费久久久久软件 | 亚洲精品二区国产综合野狼 | 成人免费毛片内射美女-百度 | 国产精品美女久久久久av爽 | 国内精品伊人久久久久av影院 | 欧美特黄a级高清免费大片 欧美特黄a级高清免费看片 | 日韩人妻无码精品久久免费一 | 亚洲日韩精品无码专区加勒比 | 粉嫩小泬无遮挡久久久久久 | 欧美拍拍视频免费大全 | 国产成人精品一区二区免费视频 | 国产一级片免费看 | 各种虐奶头的视频无码 | 日本aaaa级片 | 看一级特黄a大片国产 | 亚洲精品国产专区91在线 | 真人一级毛片 | 免费的成人a视频在线观看 免费的国语一级淫片 | 精品欧美日韩一区二区 | 免费观看黄色一级片 |