帮我看看这句英语有语法错误吗?And,besides,mileage improvement by improving torque up by an engine sound becoming quiet and getting closer to perfect combustion,torque,it is it with clean of exhaust gas.大意我是明白了,但是我就是觉得这个句子的语法和用词很有问题,
问题描述：
帮我看看这句英语有语法错误吗?
And,besides,mileage improvement by improving torque up by an engine sound becoming quiet and getting closer to perfect combustion,torque,it is it with clean of exhaust gas.
大意我是明白了,但是我就是觉得这个句子的语法和用词很有问题,
答
mileage improvement by improving torque up by an engine sound becoming quiet and getting closer to perfect combustion
缺一个动词吧?如果sound做动词用,应该加一个s