· 比如黄海、渤海、地中海(the Mediterranean Sea)和太平洋、印度洋、大西洋。 再来看一下剑桥词典对于ocean的解释: 1) a very large area of sea 2) used in the name of each of the world's five … · As I have understood, "At sea" is a conception of not being on the land when taking about sea waters or oceans "At the sea" means by the sea waters when, for instance, we talk about seals or …