1.prone to 易于；傾向于

As they shorten, cells become more prone to disease and death.

細胞變小后就會更容易感染疾病，也更容易死亡。

He's prone to flit between subjects with amazing ease.

他往往會輕松自如地轉換話題。

2.step down 辭職；下臺

The manager had to step down on account of poor health.

那位經理由于身體不好,只能辭職不干。

He has decided that he doesn't want to embarrass the movement and will therefore step down.

他已拿定主意：他不想令運動陷入困窘的境地，因此決心辭職。

3.economic crisis 經濟危機；金融危機

Natural disasters have obvi-ously contributed to the continent's economic crisis.

很顯然，自然災害也是造成該大陸經濟危機的原因之一。

The economic crisis was interpreted in diametrically opposing ways.

對于這場經濟危機有著截然不同的解釋。