经常会看到tens of thousands of...或者hundreds of thousands of...

经常会看到tens of thousands of...或者hundreds of thousands of... tens of thousands tens Tens of thousands of tens and thousands of tens of thousands tens of thousands in tens of是什么意思? tens of millions tens of millions of 等于 thousands of tens of thousands和tens of millions 的意思 a couple tens of thousands in the tens of millions thousands of tens of thousands of tens of thousands of student是什么意思? 请问tens of thousands of tourists是什么意思? tens of kilograms 意思如题 Tens of thousands 什么表达方法? tens of thousands of people 和tens of thousands more people的微小差别?如何翻译? There are （ ） trees on the hill.A.thousands of B.two thousand of C.two thousands D.thousan of