Any of various natural bitumens, such as mineral pitch or asphalt.

树脂，自然沥青：某种自然的沥青，如矿石沥青或树脂。

youdao

Any of various natural bitumens, such as mineral pitch or asphalt.

树脂，自然沥青某种自然的沥青，如矿石沥青或树脂。

youdao

Any of various natural bitumens, such as mineral pitch or asphalt.

树脂，自然沥青某种自然的沥青，如矿石沥青或树脂。

youdao