V2EX subtract

Subtract

释义 Definition

subtract(动词):减去;扣除;从……中移除一部分。常见结构:subtract A from B(从B中减去A)。也可引申为“削弱、减少(影响/价值等)”。

发音 Pronunciation (IPA)

/sbtrkt/

例句 Examples

Please subtract 5 from 20.
请从20中减去5。

If you subtract the cost of rent and groceries from your income, you’ll see how much you can save each month.
如果你从收入中减去房租和日用品开销,就能看出每个月能存下多少钱。

词源 Etymology

来自拉丁语 subtrahere,由 **sub-**(在下、向下)+ trahere(拉、拖)构成,本义是“拉走、移走”,后来在数学语境中固定为“减去”。

相关词 Related Words

文学作品中的用例 Literary Works

  • Lewis Carroll, Alice’s Adventures in Wonderland:作品中多处出现基础算术(包括“加减”)的语境,常用到 subtract 一类的表达来呈现“荒诞的逻辑与算术”。
  • George Orwell, 1984:在强调“思想控制”与“真理被改写”的语境里,涉及算术与真伪判断的表达中可见 subtract 等基础数学词汇的使用。
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