She's just being childish and immature.
她真是小孩子气，太冒失了。
It's time you put a stop to this childish behaviour.
这种孩子气的行为你该收敛了。
I thought. How childish I was!
我想，我真幼稚啊！
他就像一个幼稚的成年人。
I always use these childish things.
我经常用这些幼稚的东西。
Oh, don't be so childish! Cheer up!
哎呀，别这么孩子气！振作起来！
我很幼稚，对不对？
这真是太幼稚了。
他是一个幼稚的男人。
Everyone has the happy memory, sad memory and childish memory.
每个人都有开心的记忆，伤心的记忆和幼稚的记忆。
他笑起来很稚嫩。
My dear child, you're being childish.
我的乖孩子，你在耍小孩儿脾气。
他在耍小孩子脾气。
Well, this is all about my childish dream.
哦，这都是我稚嫩的梦想。
There was no beard upon his chin; his voice was a childish treble.
他的下巴没有胡须，他的声音是孩童般的高音。
It is childish to ask this question.
问这样的问题太幼稚了。
Slapping his face was a childish act.
打他的耳光是幼稚的举动。
幼稚，我知道。
It's time you gave over such childish behaviour.
该是你停止这类幼稚行为的时候了。
A: Behave yourself, Tom. Don't be so childish.
规矩点儿，汤姆，别这么孩子气。
Of course, some were more childish than others.
当然，总有人更孩子气一些咯。
I think it's childish to celebrate that day.
我觉得庆祝这一天有点儿幼稚。
You need to grow up! You're acting childish.
你得长大！你的行为举止像个孩子，很幼稚。
His behavior is childish, so nobody likes him.
他的行为幼稚，所以没人喜欢他。
This is not just the fear of a childish imagination.
这不是小孩子的胡搅蛮缠。
Why people can not be pure and childish when they grow up?
为什么人长大了就不能单纯不能幼稚了呢？
Hareton grew black as a thunder cloud, at this childish speech.
哈里顿听了这一套孩子气的话，脸像阴云一般黑。
Hareton grew black as a thunder cloud, at this childish speech.
哈里顿听了这一套孩子气的话，脸像阴云一般黑。
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