HANDLE WITH CARE in these places.

小心为妙(在以下地方)。

Glass, handle with care!

玻璃小心轻放！

My pleasure, please handle with care.

很高兴为你效劳，拿好。

Handle with care, or the acid may get out.

小心轻放，否则酸要淌出来的。

It's a very sticky situation. Handle with care.

这是很棘手的状况，要小心处理。