multiply

英 [ˈmʌl.tɪ.plaɪ]      美 [ˈmʌl.tə.plaɪ]
  • vt. 乘;使增加;使繁殖;使相乘
  • vi. 乘;繁殖;增加
  • adv. 多样地;复合地
  • adj. 多层的;多样的
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multiply
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multiply 乘,乘以,繁殖,多倍

multi-,许多,多个,-ply,倍数,词源同imply,comply.引申词义繁殖。

multiply
multiply: [13] Multiply is one of a large family of English words based on Latin multus ‘much’, a word of uncertain origin which may be related to Greek mála ‘very’ and Latin melior ‘better’. Multiply itself comes from the Latin derivative multiplicāre, formed with the element plic- ‘fold’ found also in complicated, explicit, etc, and therefore very closely parallel to the native English compound manifold.

Other members of the family include multiple [17], from late Latin multiplus (the -plus is a relative of the -plic- in multiplicāre); multitude [14], from Latin multitūdō ‘crowd’, formed with the abstract noun suffix -tūdō; and of course the host of words formed since the 16th century with the prefix multi-, including multifarious [17] (based on Latin -fārius ‘doing’), multilateral [17], multinational [20], multiracial [20], and multistorey [20].

=> fold
multiply (v.)
mid-12c., multeplier, "to cause to become many," from Old French multiplier, mouteplier (12c.) "increase, get bigger; flourish; breed; extend, enrich," from Latin multiplicare "to increase," from multiplex (genitive multiplicis) "having many folds, many times as great in number," from comb. form of multus (see multi-) + -plex "-fold," from PIE *plek- "to plait" (see ply (v.1.)). Mathematical sense is attested from late 14c. Related: Multiplied; multiplying.
1. Take the time in seconds, square it, and multiply by 5.12.
记下用了多少秒时间,将其平方,再乘以5.12。
2. Take the average of those ratios and multiply by a hundred.
算出那些比率的平均值再乘以100。
3. The children are already learning to multiply and divide.
孩子们已经开始学习乘法和除法了。
4. Think of a number and multiply it by two.
想出一个数,然后乘以二。
5. When animals have more food, they generally multiply faster.
动物在有较多的食物时, 一般繁殖得较快.

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