The bad news caused Jim to go off the deep end.

那个坏消息使吉姆勃然大怒,失去理智.

Go off the deep end.

别太过分了。

John is completely in love with Mary and wants to marry her. I was afraid he would go off the deep end.

约翰深深地爱上了玛丽并想娶她为妻。我怕他会贸然行事，不顾一切地追求她。

Speculation, if allowed to get out of hand, can produce unexpected and unsatisfactory results, and you may have a tendency to go off the deep end in handling financial matters.

如果投机活动超出控制之外的话，可以带来难以估计及无法令人满意的结果，而且你可能在处理钱财事务时，变得怒不可遏。