嘻嘻哈哈

hái zi men yī tiān dào wǎn xī xī hā hā

孩子们一天到晚嘻嘻哈哈。

The children spent the whole day laughing and joking.

wǒ men bàn gōng shì de rén chéng tiān dōu xī xī hā hā de

我们办公室的人成天都嘻嘻哈哈的。

There is always a lot of joking and laughter in our office.

yī zhèn xī xī hā hā de xiào shēng

一阵嘻嘻哈哈的笑声

a ripple of laughter

duì dài zhè yàng de dà shì qing xī xī hā hā de kě bù xíng

对待这样的大事情，嘻嘻哈哈的可不行！

It is an important matter, so you can't treat it casually.

zhèng jīng shì bù néng xī xī hā hā

正经事不能嘻嘻哈哈。

Don't be facetious about serious matters.

tàn xué yùn dòng kě bù shì xī xī hā hā nào zhe wán de

探穴运动可不是嘻嘻哈哈闹着玩的。

It is no joke to go spelunking.