但是晶体的替换仍不完美，主要是因为替换晶体本身仍有改进空间。

But lens replacement is not yet perfected, largely because replacement lenses themselves still have room for improvement.

youdao

但是晶体的替换仍不完美，主要是因为替换晶体本身仍有改进空间。

But lens replacement is not yet perfected, largely because replacement lenses themselves still have room for improvement.

youdao