steam up

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

曇る, 湯気で覆われる

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

:
The bathroom mirror always steams up after a hot shower.
熱いシャワーを浴びると、バスルームの鏡はいつも曇る
The car windows started to steam up in the cold weather.
寒い天気で車の窓が曇り始めた
2.

怒る, 興奮する

to become angry or agitated

:
He started to steam up when he heard the bad news.
彼は悪い知らせを聞いて怒り始めた
Don't let him steam up, just try to calm him down.
彼を怒らせないで、ただ彼を落ち着かせようとして。