Although recent years have seen substantial reductions in noxious pollutants from individual motorvehicles, the number of such vehicles has been steadily increasing.
虽然近年来机动车排放的有害污染物大幅减少，但机动车的数量一直在稳步增加。
2
Theft of motorvehicles is up by 15.9%.
机动车盗窃案增加了15.9%。
《柯林斯英汉双解大词典》
3
It was uncommon to find means of transport that were more efficient than walking but less technologically advanced than motorvehicles.