I have been known to faint at the sight of blood.
大家都知道，我看到血就会昏倒。
He stood aghast at the sight of so much blood.
他看见这么多血，吓得目瞪口呆。
His heart lifted at the sight of her.
他一看见她心里就高兴起来了。
She paled visibly at the sight of the police car.
她一看见警车，脸色就刷地变白了。
He flinched at the sight of the blood.
他一见到血就往后退。