形 joyous，merry，[方]vigorously，with great drive；名 （情人） sweetheart ；

[例句] 你和女孩有过云雨之欢吗？ Have you ever made love to a girl before?

[例句] “我们相谈甚欢。”——“是吗？谈了些什么？” "We had a very interesting chat." — "Really? About what?"