ocean

n.

1. 洋, 海洋, 大海
   • One afternoon, she went for a swim in the ocean.
     一天下午她到海里去游泳。
2. (地球上划分出的)洋
   • As we've seen, oceans cover more than 70％ of the earth.
     据我们所知, 海洋占地球面积的70％以上。