聚合物是一种昂贵的化学产品，并且其注入是一个漫长而复杂的过程。

Polymer is a very expensive material and the injection process is a long complex process.

youdao

聚合物是一种昂贵的化学产品，并且其注入是一个漫长而复杂的过程。

Polymer is a very expensive material and the injection process is a long complex process.

youdao