The hot sun sapped our energy.

火辣辣的太阳烤得我们虚软无力。

I was afraid the sickness had sapped my strength.

恐怕这场病已经消耗了我的力气。

Years of failure have sapped him of his confidence.

连年失败使他逐渐丧失了自信。

The climb sapped our energy.

这次的攀登耗尽了我们的精力。

She's been sapped of her optimism.

她的乐观情绪已逐渐消失了。