In the meantime, I believe that the U.S. is doing quite a bit of work in terms of raising fuel efficiency standards,

同时，我相信美国在提高燃料效率标准方面做了不少事，

对全球变暖的政策 - SpeakingMax英语口语达人

So they're, the United States remains committed to that target, I believe.

所以，我相信他们，美国还是有决心实现这个目标的，我认为。

对全球变暖的政策 - SpeakingMax英语口语达人