四大洋：Four oceans；太平洋：Pacific Ocean；大西洋：Atlantic ocean；印度洋：Indian Ocean；北冰洋：Arctic ocean。
例句：
1、世界是由七人洲四大洋组成的。
The world is made up of seven continents and four oceans.
2、我们在方寸间遨游五洲，也让这个世界在四大洋平静航行。
We travel around the five Continents on a small stamp, and we also pray for peaceful navigations across the four Oceans in the world.
3、四大洋冰淇淋，森特维尔，马萨诸塞州。
Four Seas Ice Cream, Centerville, Massachusetts.
4、显生宙以来，中国西部盆地演化经历了4个大地构造旋回，受控于全球四大洋-陆体制的变迁。
After Phanerozoic Eon, evolution of western basin in China undergone four tectonic cycles controlled by change of four oceans and lands.
5、他承认世界是由五大洲四大洋构成，中国是亚细亚领土最大的国家，突破了传统以中国为中心的观点。
He admitted that the world was made up of five continents and four oceans, China was the largest country in Asia territory, which broke through the traditional view of China as the center.