1.
I'm tired of your immaturity. Why do not you grow up?
我真厌倦了你的幼稚无知，你为什么就不能长大一些呢？
2.
He took pity on this young greenhorn of a nephew, and wanted to open his eyes too.
他可怜他的侄儿幼稚无知，竭力想使他也睁开眼睛。
3.
Many of these youngsters know the job in theory but they're still wet behind the ears when it comes to putting it into practice.
这些年轻人中很多人理论上知道怎么干, 但要付诸实践时, 仍然是幼稚无知的。
4.
It must be remembered, in extenuation of this primitive young woman, that she held these opinions in an age of general darkness.
我们必须为这些幼稚无知的姑娘开脱一下，她是在一个普遍蒙昧的时代就持有这些看法了。
5.
An uninstructed young mind.
没有知识的幼稚见解
6.
it carries the worst kind of poison.
空话连篇，言之无物，还可以说是幼稚；
7.
Lacking training or experience.
幼稚的，无经验的缺乏训练或经验
8.
We eventually ran out of patience with his childish behaviour.
我们终于对他幼稚的行为忍无可忍。
9.
puerile behaviour, concerns, objections, tasks
幼稚的行为、 无谓的操心、 徒劳的反对、 无聊的工作
10.
We know how to deal with such situations. We were not born yesterday.
我们知道如何处理这种局面；我们并不幼稚天真
11.
Richard: Well, I know of one, but his humor is a bit juvenile!
里查德：我知道有一位，可他的幽默有点幼稚！
12.
“All I ever really needed to know, I learn in kindergarten.
所有我真正需要知道的，都在幼稚园学过了！
13.
On the Ideas of Tao Xingzhi about Building Chinese Kindergarten;
论陶行知关于建设中国式幼稚园的构想
14.
Writing long-winded and empty articles may be set down to immaturity, but striking a pose to overawe people is not merely immature but downright knavish.
装腔作势，借以吓人，则不但是幼稚，简直是无赖了。
15.
"My, how green!" exclaimed the young gentleman.
“哎呀, 多么幼稚
16.
a naive person, remark
幼稚的人、 言语.
17.
There is nothing here, / Which, from the outward to the inward brought, / Molded thy baby thought(Tennyson)
这里一无所有/无论外界或内部/影响幼稚的思想(坦尼森)
18.
They don't know I've been in the daycare center, Just 21.
他们不知道我已经去过“幼稚园”了，他们以为我去了21号建筑