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。

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.

youdao

对于这场辩论，我没有什么可补充的，但我可以保证，对于我们中的一些人来说，此次衰退的冲击将终其一生。

I have little to add to that debate, but I can guarantee that for some of us, the impact of this downturn will last a lifetime.

youdao

然而，国际河流组织的Ame Trandem称，当下并没有什么渔业技术可以保证湄公河鱼类的安全迁徙。

But International River's Ame Trandem said no fishery technology currently exists that can guarantee safe passage for the Mekong's numerous fish species.

youdao