我付出了很大的汗水和大量的眼泪在这个国家。

I put in a lot of sweat and a lot of tears in this state.

youdao

我的朋友做了大量和长期观察，人会有眼泪，而猿猴则没有，为什么？

One of my friends has made massive observations with a very long time and found that our human beings have tears while apes haven't, why?

youdao

我的朋友做了大量和长期观察，人会有眼泪，而猿猴则没有，为什么？

One of my friends has made massive observations with a very long time and found that our human beings have tears while apes haven't, why?

youdao