It must be hard for her, bringing up four children on her own.

她一个人抚养四个孩子一定很艰难。

《牛津词典》

Never give up, and one day you would be valued for your hard work.

不要放弃，总有一天你会因为努力而被看重的。

youdao

So, study hard, and be prepared to keep it up for your whole lifetime.

要时刻努力，并作好终身学习的准备。

youdao

So, study hard, and be prepared to keep it up for your whole lifetime.

要时刻努力，并作好终身学习的准备。

youdao