Learner's definition of PER
1
: for each每；每一 -
The pay is $12 per hour. [=for every hour you work, you will be paid $12]工资是每小时12美元。
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The tickets are $25 per person. [=each ticket costs $25]票价每人25美元。
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The speed limit is 35 miles per hour.限速每小时35英里。
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The car gets 32 miles per gallon.这辆车每加仑油可行驶32英里。
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He averages 15 points per game.他平均每场比赛得15分。
2
somewhat formal : as directed by or stated in : according to按照；根据 -
Per your advice, I accepted their offer.按照你的建议，我接受了他们的报价。
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The work was done as per [=according to] your instructions.工作按照您的指示完成了。
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As per usual [=as usual], I paid for our meal. [=I paid for our meal, which is what I usually do]和往常一样，我们的饭钱是我付的。