1 [U] (especially US 尤为美) the mass of salt water that covers most of the surface of the earth 海洋;大海:
Two thirds of the earth's surface is covered by ocean.地球表面有三分之二被海洋覆盖。
2 [C] (also Ocean) one of the five main areas into which the water is divided 洋(地球上的五大洋之一):
the Atlantic/Indian/Pacific Ocean大西洋;印度洋;太平洋☞Look at sea. 参看sea。 ☞picture at current 见current插图