up-and-down pull on the drawbar

例句：

1. 1. The carwas driving up-and-down thestreet.
   汽车在街道上来回行驶。
2. 2. Shewalked up-and-down in frontof the house.
   她在房子前面来回走动。
3. 3.The children were playing up-and-down on the swings.
   孩子们在秋千上来回玩耍。