deadpan /ˈdɛdˌpæn/

• 1. 

  ADJ Deadpan humour is when you appear to be serious and are hiding the fact that you are joking or teasing someone. 面无表情的

  例：

  ...her natural capacity for irony and deadpan humour.

  ... 她天生具有的嘲讽和冷面幽默才能。