perplexing

adj.复杂的,令人困惑的

令人困惑的；使人迷惑的；令人费解的

形容词

1、The instructions were perplexing and difficult to follow.
这些说明让人困惑，难以理解。
2、I find it perplexing that she would choose to quit her job with no backup plan.
我觉得她选择辞掉工作却没有备用计划真是令人费解。