| 单词 | per |
| 释义 | per /perr/; unstressed /peuhr/, prep. 1. for each; for every: Membership costs ten dollars per year. This cloth is two dollars per yard. 2. by means of; by; through: I am sending the recipe per messenger. 3. according to; in accordance with: I delivered the box per your instructions. adv. 4. Informal. each; for each one: The charge for window-washing was five dollars per. [1580-90; < L: through, by, for, for each. See FOR] Usage. PER for a or an or for each occurs chiefly in technical or statistical contexts: miles per gallon; work-hours per week; feet per second; gallons of beer per person per year. It is also common in sports commentary: He averaged 16 points per quarter. PER is sometimes criticized in business writing in the sense "according to" and is rare in literary writing. |
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