I cannot guarantee anything, but please be assured that we'll try our best.

我不能保证，但请放心我们一定尽力。

youdao

We have already received many bookings and though I cannot guarantee anything, please be assured that we'll try our best, Mr. Davis.

许多桌位已经订出去了，尽管我不能向你保证，但请相信我会尽力而为的，戴维斯先生。

youdao

I cannot let anything happen to that tripod. Can you guarantee it will not be damaged if I check it in?

我可不能让这个三脚架出事。您能够保证如果它托运的话不会受损吗？

youdao