Tens of thousands of Chines students have gone to foreign co

Tens of thousands of Chines students have gone to foreign co tens of thousands tens Tens of thousands of tens of thousands tens and thousands of tens of thousands of people 请问：tens of thousands students 这个表达对吗? ________number of students have gone to Shanghai. a couple tens of thousands tens of thousand of chinese middle school students have to f Tens of thousands of school children是什么意思? tens of thousands of student是什么意思?