一叶障目的英文：
[Literal Meaning]
a/leaf/block out/eyes
to cover one's eyes with a leaf

[解释]
眼睛被一片树叶挡住，看不到事物的全貌。

[Explanation]
Used to describe a person whose eyes are shaded by something trivial so that all things farther or more important are shut out.

[例子]
在处理重要的人或事时，我们千万不能一叶障目，必须要多方面考虑。

[Example]
When dealing with important matters or people, we must not have our view overshadowed by the trivial but consider thoroughly.

[英文等价词]
can't see beyond the end of one's nose