poker-faced
adjective /ˈpəʊkə feɪst/
/ˈpəʊkər feɪst/
(informal)- with an expression on your face that does not show what you are thinking or feeling
不露声色的；毫无表情的 - Our passports were checked by poker-faced officials.
我们的护照由面无表情的官员检查。 - a poker-faced expression
面无表情
- Our passports were checked by poker-faced officials.