r. with a forward motion
r. in accompaniment or as a companion
r. to a more advanced state
r. in addition (usually followed by `with')
adv. 平行地, 向前
prep. 沿着
1. She walked along the riverbank every morning.
她每天早上沿着河岸散步。
2. We decided to drive along the coast for our vacation.
我们决定在假期沿着海岸开车旅行。
3. He found a nice café along the busy street.
他在繁忙的街道上找到了一个不错的咖啡馆。