n.手推车；电车
He rolled the trolley across the room. 他推着手推车穿过房间。
Just stay here with the baggage on the trolley. 你就待在这儿看管手推车上的行李。
Oil the trolley, and then it will turn more freely. 给手推车加点油，这样它就能自由运转了。
n.无轨电车
