The plane started taxiing down the runway.飞机开始在跑道上滑行。We watched the jet plane taxiing down the runway.我们看着喷气式飞机沿跑道滑行.The plane taxied / was taxiing along the runway.飞机在跑道上滑行....
运河上捕鱼的最佳地点是靠近水闸的地方。The best place to catch fish on a canal is close to a lock.过剩的水将会通过水闸排放到海里去.Excess water will drain through sluices into the sea.蓄在水闸内的水具有自由能.The water stored behind a dam has free energy....