There is nothing to guarantee that everybody is willing to make the effort; there is no assurance that the learner will have any adequate return for his toil.

没有什么可以保证每个人都愿意付出努力；学生的辛苦学习是否能得到适当的回报，这是没有把握的。

youdao

Even when they on purpose dropped him off somewhere far away, he would make his way back to Taikang Hospital and patiently wait for his owner to return.

即使他们故意把它送到很远的地方，它也会回到泰康医院，耐心地等待主人回来。

youdao

The pond was filled in, shortly after their return, to make way for an apartment complex.

他们回来后不久，那个池塘被填平了，用来建造一幢公寓大楼。

youdao

He had heard Lincoln say that he wanted to make it easy for the southern states to return to the Union.

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