For example, the transportation systems that benefit mankind also create pollution and use up valuable energy resources.

例如，运输系统对人类有利，却会制造污染，并用尽珍贵的能源。

youdao

For example, the transportation systems that benefit mankind also create pollution and use up valuable energy resources.

例如，运输系统对人类有利，却会制造污染，并用尽珍贵的能源。

youdao