不确定具体数目的数字表达

几个 a couple of 一对,两个。实际也指两三个这种不确定的数量。of可省
eg. a couple of thing;
a couple hours;
a couple more tables

十几个 a dazon of十二个,但也可以表示大约12个这种不确定数量。后接名词of可省

几十个 dazons of 这里的 of 不能省。也可用tens of. dazons/tends of students

几千 thousands of dollars/ miles

几万 tens of thousands of dollars/ miles

几十万 hundreds of thousands of dollars

几百万 millions of dollars 或者用一个词 multimillion

几千万 tens of millions of dollars

几亿 hundreds of millions of dollars

百分之二十几 twenty something percent

二十几岁的女人 a twenty something woman

二十岁以下 under 20, 或者统称 teenagers (13-19岁) 青少年


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