孩子气

nǐ yǐ jīng la bié zhè me hái zi qì

你已经R17啦，别这么孩子气！

You shouldn't be so childish, you're seventeen now!

bié hái zi qì

别孩子气！

Don't be childish!

zhè zhǒng hái zi qì de xíng wéi tā gāi shōu liǎn le

这种孩子气的行为他该收敛了。

It's time he puts a stop to this childish behaviour.

zài tā de wēi xiào zhōng yǒu jǐ fēn hái zi qì

在她的微笑中有几分孩子气。

She has a childlike smile.

tā de shuài qi hé hái zi qì de mèi lì xī yǐn le wǒ

他的帅气和孩子气的魅力吸引了我。

I am attracted by his good looks and his boyish charm.

wǒ méi yǒu zài yì tā de hái zi qì jì xù nài xīn de shuō

我没有在意她的孩子气，继续耐心的说。

I don't care her childishness and continue say of patience.