欢笑的英文：
laugh happily
belly-laugh

参考例句：

Provoking mirth or amusement;funny.
喜剧的引起欢笑或娱乐的;滑稽可笑的

The whole hall is filled with joy ad laughter
满堂欢笑

The whole hall is filled with joy and laughter -- there is only one who feels distressful
满堂欢笑,一人向隅。

A purveyor of joy and laughter
一个带来欢笑的人

Green pines laugh in the breeze.
青松迎风欢笑。

He could not restrain his temper [mirth].
他无法抑制愤怒[欢笑]。

A playground vocal with the shouts and laughter of children.
充满了孩子们叫喊和欢笑的操场

I'll grin and bear it.
我要逆来顺受，忍气吞声强作欢笑。

The world smiles with Reader’s Digest.
《读者文摘》为全世界的人们带来欢笑。

His hearty laughter is testimony of his happiness.
他尽情的欢笑可以证明他很幸福。

laugh是什么意思：
v. 笑；嘲笑；使笑得；以笑表示
n. 笑；笑声；引人发笑的事或人

an exaggerated laugh
矫揉造作的笑声

It is no laughing matter.
这没有什么可笑的。

He who laughs last laughs best.
最后笑的人才笑得最开心。

happily是什么意思：
adv. 幸运地，幸福地；适当地

May it soon terminate happily!
但愿你早日化险为夷。

His message was not very happily worded.
他的通知在措辞上有些欠妥。

And they riddled together happily ever after.
他们从此一起猜谜，过着幸福快乐的生活。

belly是什么意思：
n. 腹，腹部；胃；食欲；前部，下侧；内部；捧腹大笑
v. 使鼓起，使胀满；鼓起，胀满；爬行，匍匐前进

The belly of a sail.
帆的鼓起部分

the belly of a ship.
轮船内部

The belly has no ears
食欲不长耳