coastwise
  (ad.)順著海岸,沿岸(a.)近海的,沿岸的
  Coast·wise Coast·ways adv. By way of, or along, the coast; following a coastline; as, coastwise winds contributed to the storm.
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  coastwise
       adj : along or following a coast; "coastal shipping"; "coastwise
             winds contributed to the storm"
       adv : by way of, or along the coast; "we were travelling
             coastwise"