妈妈工作很辛苦。

Mother work very hard.

youdao

这只鸟妈妈一定很辛苦地寻找所有的毛，然后用它们搭成了这样漂亮的一个圆形鸟巢。

The old bird must have worked hard to find all the hairs, and make them into such a pretty, round nest.

youdao

可妈妈知道我平时学习很辛苦，好不容易才盼来了一个国兴节，她不忍心破坏我的快乐。

Mom knew that I normally can be very difficult to learn, finally, a country which was looked forward section, and she could not bear to destroy my happiness.

youdao