开心

to feel happy

to have a great time

to make fun of somebody

get into the groove

yippee

cheeriness

be in the groove

开心[kāixīn]

-（快乐;舒畅）feelhappy;rejoice;joyful;bedelighted;haveagrandtime:
Hisjoywasimmense.他开心极了。
Thechildrendanceroundhimindelight.孩子们开心地围着他跳舞。
-（戏弄别人）amuseoneselfatsb.'sexpense;makefunofsb.;playajokeonsb.

在去夏威夷的旅途中，我们都很开心。
On the trip to Hawaii, we were all in high spirits.

玩得开心点。
Have fun.

不开心是他生病的根源。
Unhappiness is the root cause of his illness.

你在今晚的晚会上一定会玩得很开心。
You'll sure to have fun at the party tonight.

fun？你玩得开心吗？
Did you have