If something gives, it stretches, bends, or breaks, or becomes less firm or tight, under pressure.

(在压力下)伸长，弯曲，断裂，变松

The shoes will give a little after you've worn them once or twice.

鞋穿过一两次后就不那么紧了。

figurative You can't work so hard all the time - something will have to give (= change).

你不能总是那么没日没夜地拼命工作——有些事必须得变一变了