1. I was sad to see you leave even though I showed no expressions.2. His jokes are funny because he tells them with a straight face.
 Show no expressions straight face
1. 雖然你離開時我面無表情事實上我很難過.2. 他說笑話很好笑因為他的臉面無表情.< >
My sister is bd-tempered and would snap at anybody whenever she feels like it.