steam up

US /stiːm ʌp/
UK /stiːm ʌp/
"steam up" picture
1.

蒙上水汽, 起雾

to cover with condensed water vapor, making it difficult to see through

:
The bathroom mirror always steams up after a hot shower.
洗完热水澡后,浴室镜子总是蒙上水汽
The car windows started to steam up in the cold weather.
在寒冷的天气里,车窗开始蒙上水汽
2.

发火, 恼火

to become angry or agitated

:
He started to steam up when he heard the bad news.
听到坏消息后,他开始发火
Don't let him steam up, just try to calm him down.
别让他发火,试着让他冷静下来。