不深入的英文怎么说呢

"不深入"在英文中可以用"superficial"来表示。"Superficial"来自拉丁文"superficies"，意思是"表面的"。

例句：

His knowledge of the subject was superficial at best. 他对这个主题的了解充其量也就是浅浅的。
She gave a superficial apology, but I could tell she didn't really mean it. 她给了一个表面上的道歉，但我能感觉到她并没有真心地道歉。
The report was superficial and didn't address the root causes of the problem. 这份报告很浅，没有解决问题的根本原因。