The meat ration was down to one pound per person per week.

肉类的配给量降到了每人每周一磅。

《柯林斯英汉双解大词典》

youdao

Protein and carbohydrate have 4 calories per gram, per unit weight.

每克每单位重量蛋白质和碳水化合物产生4卡路里。

youdao

Each year, Americans eat an average of more than five kilograms of chocolate per person.

VOA: special.2010.02.17

If you divide the two of them through you will get 6.02 times 10 to the plus 23 per mole.

如果你除以他们两个,你会得到6。02*10^摩尔。

麻省理工公开课 - 固态化学导论课程节选

It's a scheme that in English counts accents or stresses per line and then arranges them in a pattern.

这种体系里的英文诗每行都有重读,然后将他们按一定模式排列。

耶鲁公开课 - 现代诗歌课程节选

Its 50, 000 members average 8, 000 trades per day, up from 3, 400 per day in March.

FORBES: Picking Winners

Petroleum imports grew by 5.7 million barrels per day (87 billion gallons per year).

FORBES: Washington's Foolish Fuel Policy

The Wales Office score of 53 per cent is two per cent below the average.

BBC: Wales Office: you don't have to be sad to work here..