这英语句语法对么?

问题描述:

这英语句语法对么?
我想表达的是我们没法划分哪些研究重要哪些不重要.we cannot draw an explicit line between the researches which are important and which not.

我想表达的是我们没法划分哪些研究重要哪些不重要.we cannot draw an explicit line between the researches which are important and which not.We can't distinguish what research is important from what resear...