到2020年加利福尼亚将要求所有出售的汽油达到低碳含量标准。

By 2020 California will require all the petrol sold there to meet a low-carbon standard.

youdao

到2020年加利福尼亚将要求所有出售的汽油达到低碳含量标准。

By 2020 California will require all the petrol sold there to meet a low-carbon standard.

youdao