Definition
Used to express that one does not understand or know the reason for something.
不明白
I can't think why he would make that kind of decision.
我想不出他為什麼會做出那種決定。
I can't think how she could forget our appointment.
我想不出她怎麼會忘記我們的約會。
I can't think why they would choose to build their house there.
我想不出他們為什麼會選擇在那裡蓋房子。