英语翻译
问题描述：
英语翻译
Methanol's most attractive feature,however,is that it can reduce by about 90 percent the vehicle emissions that form ozone,the most serious urban air pollutant.
最只要是分析下句子结构?
答
主干是Methanol's most attractive feature is that it can reduce the vehicle emissions.
by about 90 percent 是表示程度的,可以减少百分之90的.
form ozone 是修饰 the vehicle 的,表示 the vehicle emissions 导致了 ozone,后面的the most serious urban air pollutant 则是修饰ozone 的.