ocean[英]['əʊʃn] [美][ˈoʃən]
释义n.洋；海洋；大海；（地球上划分出的）洋复数：
当c后面接a，o，u的时候，c的发音与字母k发音相同，叫做“hard c sound”：
cat, cap，call，coat，cup；
当字母c后面接e，i，或y的时候，通常c的发音与字母s发音相同，叫做“soft c sound” ：
city, ice, rice, face, cell, cent, voice, pencil, juice；
有时在e或i前面，c会发/sh/音：
ocean, racial, social
例句:
The ocean is the sea.There were few sights as beautiful as the calm ocean on a warm night.鲜有景致能与温暖夜色下风平浪静的大海媲美.
An ocean is one of the five very large areas of sea on the Earth's surface.They spent many days cruising the northern Pacific Ocean.他们在北太平洋航行了很多天.
