calamity

disaster, calamity, catastrophe, misfortune

这些名词均表示“灾难”或“不幸”之意。
disaster: 普通用词，指大破坏、痛苦或伤亡。
calamity: 多指个人的不幸，比disaster严重，强调灾难引起的悲痛以及对于损失的感觉。
catastrophe: 语气最强，指可怕的灾难，强调最终的结局。
misfortune: 多指较为严重的不幸，强调不幸多由外界因素所致。

名词 calamity:

1. an event resulting in great loss and misfortune
   同义词：catastrophe, disaster, tragedy, cataclysm

1. She is always on the alert for some new calamity.
   她总是保持警觉以防某种新的灾难。
2. The attack on Pearl Harbor was a crushing calamity.
   偷袭珍珠港(对美军来说)是一场毁灭性的灾难。
3. More than 50 people were killed in this calamity.
   这次灾难中有五十多人丧生。