Vampires' weakness is that they are afraid of sunshine.
吸血鬼的弱点是害怕阳光。

This weakness had led him to an imprudent concession.

这种软弱使他作出了一个不谨慎的让步。

His weakness for cigarettes is detrimental to his health.

他抽烟的嗜好对他的身体有害。

My weakness is laziness.

我的缺点是懒惰。

※What weakness is it that you can never tolerate?---Sycophancy and servile flattery. 你最不能容忍的缺点是什么?----奴颜婢膝.