And if that wasn t bad enough NOx is a poisonous pollutant that it takes a lot of effort to remove.

而且，比这更糟的是，氮氧化物属于一种有毒的污染物，清除它需要付出很高的成本。

youdao

Obviously I am a little disappointed finishing in fifth as I know that the car could do so much more, but it just wasn′t working for me this weekend.

坦白说我对今天取得第五名的成绩有一点失望，因为我知道赛车其实还可以发挥得更棒，但是这个周末不属于我。

youdao

Annie Reed: Well, it wasn 't a sign. It was a coincidence.

安妮：这不是什么征兆，只是巧合而已。

youdao

It wasn't something a young wife should see, especially a young wife who would soon be a mother herself.

VOA: special.2010.01.09

What interested them was that they spoke to a fisherman but it wasn't a fisherman. It was a woman.

他们在那儿跟一个渔民交谈,大家都以为那渔民是个男人。

麻省理工公开课 - 媒体、教育、市场课程节选

It wasn't nearly as big as Rome, which would consist of a million inhabitants fairly quickly around this time.

而且也没有罗马那么大，罗马当时能快速聚集百万居民。

耶鲁公开课 - 新约课程节选

"Those of us who love this city and those of us who love this race recognized that it wasn't the marathon if it wasn't a unifying event, " Wolfson said.

WSJ: NYC Marathon Takes the Right Road

"It wasn't people attacking, it wasn't a fake access point...but we could tell there was this outside Symbol device, " he says, referring to the company that makes handheld devices for supply chain management.

FORBES: How Lehman Brothers Overcame Its Wireless Fears

Ms. PROSE: I mean it isn't - it wasn't a problem for Leonard Michaels and I can just stop worrying about that.

NPR: Could You Be the Great American Novelist?