沿岸贸易船;居民;撬;轨道
Coaster \Coast"er\, n. 1. A vessel employed in sailing along a coast, or engaged in the coasting trade. 2. One who sails near the shore.
coaster n 1: a resident of a coastal area 2: someone who coasts 3: a covering (plate or mat) that protects the surface of a table (i.e., from the condensation on a cold glass or bottle)