听众 Ming 想知道怎样区分 “proportion、rate、ratio” 和 “percentage” 这四个表示 “比率” 的名词之间的区别。其中，“proportion” 和 “percentage” 都可以表示 “某部分在总体中所占的比例”。“Ratio” 通常指 “两个群体或数量之间的关系比率”。

Moody's report indicates the immediate impact will be reflected in a 3.4 percent drop in the volume of Mexican exports to the United States in the first three months under the new tariff. Over a full ...

China has made steady progress in expanding employment opportunities for people with disabilities, with the national employment rate for this group increasing by 4.8 percentage points during the ...