Definition: not knowing what to do in a new situation Level: C1
这是他上班的第一天，他看起来有点不知所措。
It was his first day in the office and he seemed a bit ___lost.
我可以想象一些客人感到有点不知所措。
I can imagine that some of the guests felt a bit ___lost.
在没有适当培训的情况下开始新工作，他完全不知所措。
Starting the new job without proper training, he was completely ___lost.
