used to express the cost or amount of something for each person, number used, distance travelled, etc. 每;每一 Rooms cost £50 per person, per night. 房價每人每晚 50 英鎊。 60 miles per hour 每小時 60 英裏 France consumes around 200 000 tonnes of cocoa per year. 法國每年消費約20萬噸可可。 This country has a higher crime rate per 100 000 of the population than most other European countries. 這個國家的每10萬人口犯罪率比大多數其他歐洲國家高。
Word OriginLatin, ‘through, by means of’; partly via Old French.