The swelling has gone down. 紅腫已消。

He has cooled down. 他的氣消了。

eliminate an unknown quantity; 消去一個未知數

reduce phlegm; 消痰

pass the summer in a leisurely way 消夏

needless to say; it goes without saying; 不消說

It takes only a week to get there and back. 來回只消一個星期。