proof

a. 防...的,耐...的
n. 校样,证据,证明
v. 检验,校对
vt. 检验

A soldier's courage is put to the proof in battle.

士兵的勇气在战斗中得到考验。

Have you got any proof that you own this bike?

你有什么证据证明这辆自行车是你的？