Definition
To behave in a way that demonstrates a severe lapse in good judgment or common sense.
失去理智
You must have taken leave of your senses to think of opening a new restaurant during such an economic downturn.
你一定失去了理智，才会想在经济如此低迷的时候开一家新餐厅。
When she decided to quit her job to travel the world, everyone thought she had taken leave of her senses.
当她决定辞职去环游世界时，大家都认为她失去了理智。
He must have taken leave of his senses to invest all his savings in that unstable company.
他一定是失去了理智，才会把所有的积蓄投资在那家不稳定的公司。