seaonn.季节(好时机； 一时； 风干； 月票)vtsean.海；海洋sea crossing bridge跨海大桥sea water immersion海水沉浸Seawater Hydraulicsseakeeping capacity适航性,耐波性能sea oil engineering海洋石油工程Seafloor exhalation海底喷流沉积sea surface current表层海流seawater temperature海水温度sea bottom sand wave海底沙波seafarer' s employer