但是，它们肯定起到了重大的作用。

But they certainly play a significant role.

youdao

可曾想到材料在其中起到的重大作用呢？

However, Who thought of materials can play a major role in?

youdao

可曾想到材料在其中起到的重大作用呢？

However, Who thought of materials can play a major role in?

youdao