game face
noun/ˈɡeɪm feɪs/
/ˈɡeɪm feɪs/
(especially North American English)- a serious expression on somebody's face, typical of somebody trying to win in a sport or game
游戏面孔：在某人脸上的严肃表情，典型地是某人试图在一项运动或游戏中获胜的表现 - I put my game face on and didn't let them see I was injured.
我表情严肃专注，没让他们看出我受了伤。 - The president seemingly always has his game face on.
总统似乎总是一副游戏的表情。
- I put my game face on and didn't let them see I was injured.