一知半解的英文：
[Literal Meaning]
one/know/that/understand
to be little or half-understood

[解释]
知道得不全面，理解得也不透彻。

[Explanation]
to have a smattering of knowledge

[例子]
对待学习千万不能抱着一知半解的态度，否则就什么也学不会。

[Example]
We must not have the attitude of sciolism toward learning, otherwise we will not learn anything.

[英文等价词]
to scratch the surface
sciolism
smatter

half-baked knowledge;the scantiness of knowledge;Scant knowledge
一知半解

Having half-baked knowledge is worse than knowing nothing at all.
一知半解，不如不知不解。

I have only a sketchy knowledge of geography.
我对地理只是一知半解.

He has a smattering of knowledge about physics.
他对物理一知半解。

It is dangerous that you have a smattering of superficial knowledge on a subject
对于任何问题一知半解的知识都是危险的。

Griffiths is glib and has a lot of superficial information on a number of subjects
格里菲思能说会道，对许多问题都有点一知半解。

He' s always laying down the law about gardening but he really doesn' t know much about it
他总是对园艺工作发号施令,其实他只是一知半解

I know of many students who possess little knowledge of the cultural history of Britain and the United States.
从接触过的许多学生的情况看，他们大多对英国美国的历史文化情况一知半解。