请参考!谢谢!
which explains (why)the area is called.,(the)factory pollution ...,which is (probably ). history (dates )back .been there (since)about the 8th century
请参考!谢谢!
which explains (why)the area is called.,(the)factory pollution ...,which is (probably ). history (dates )back .been there (since)about the 8th century