The first catalytic converters were called conventional oxidation catalysts.最初的转化器叫做常规氧化催化器.The air guards the catalytic converter from overload and possible resulting damage.空气防止了催化式排气净化器的过载及可能产生的损坏.It is known as catal...
Don't play jokes on the poor girl.别再开这可怜的女孩玩笑了.Do your friends play jokes on you on April Fool's Day?你的朋友愚人节跟你开玩笑 吗 ?Mark Twain liked to play jokes on his friends.马克·吐温喜欢开朋友的玩笑....