题目

per cent 和percent 的区别?
because the moon has only an eightieth of the earth's mass,it require97 per cent less energy to travel the quarter of a million miles from the moon to earth-orbit than the 200 mile-journey from earth's surface into orbit.

提问时间：2020-07-13

答案

percent 是百分率 百分比 　78 percent　 78% .
per cent 是两个单词 per 是“每一”的意思 cent 是“分（钱的单位）”的意思
每一分钱”
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