n.智力游戏;谜;疑问 ;
v.迷惑;苦苦思索;
例句:
I bet you can't do this puzzle.
我敢说,你解决不了这个难题.
Data from Voyager II has presented astronomers with a puzzle about why our outermost planet exists.
“旅行者二号”发回的数据给天文学家们提出了一个难题:离我们最远的那颗行星为什么会存在。
It's good for students to puzzle things out for themselves.
让学生们自己思索解决难题很有好处.