noun · a flush or reddening of the face, typically due to emotion or health

听到大家的赞美，她的脸上泛起了一阵红潮。

noun · a term for the menstrual period

红潮期间，女性应该多注意休息和保暖。

noun · a discoloration of seawater caused by a bloom of toxic red algae

受污染影响，这片海域爆发了严重的红潮。