行駛速度 running speed; 超速行駛 drive above the speed limit; 在輕松地?fù)P帆行駛 under easy sail; 船在水面上行駛。 boats sail on the water. 這種小汽車在山路上行駛得很好。 this car performs well on hills. 卡車向北行駛。 the truck is going north. 火車正以每小時(shí)50英里的速度行駛。 the train is going at fifty miles an hour