As early as 600 years ago, China owned world's largest ocean-going fleet commanded by Adm. Zheng he. Though he made seven ocean voyages, no territorial expansions were ever made.

早在600多年前，中国就拥有世界上最庞大的郑和远洋舰队，七次下西洋也没有用于搞对外扩张。

youdao

Muenchow told the briefing that over the last seven years he had only received funding to measure ocean temperatures near the Petermann Glacier for a total of three days.

明肖告诉通报会，在过去七年里，他收到的资金只够在彼得曼冰川附近测量三天海洋气温。

youdao

Were it to melt entirely, Greenland's icesheet would drive up ocean levels by some seven metres (23 feet), drowning coastal cities around the world.

如果格陵兰冰原完全融化，世界各地海洋水平面将会上升7米（23英尺）左右，淹没沿海城市。

youdao

Seven Mile Bridge survived many storms, including one huge ocean storm that damaged the Keys in nineteen-thirty-five.

VOA: special.2010.03.22

It carried a chimpanzee named Ham on a seven hundred kilometer flight over the Atlantic Ocean.

VOA: special.2009.06.10

Three small British ships crossed the Atlantic Ocean in sixteen-oh-seven.

VOA: special.2011.01.12

He, an extraordinary 15th-century Imperial fleet commander who completed seven long ocean voyages, including beyond the Indian subcontinent, reached the Horn of Africa and what is now Tanzania and Kenya.

FORBES: China Turns Its Focus To Africa

In 1960, Piccard's father, Jacques, descended seven miles beneath the Pacific Ocean in another pressurized module to set a deep-dive record that has been matched only twice.

WSJ: A Solar-Powered Plane Travels Light | WSJ. Magazine May 2013

This ocean is the key to the seven seas in the 21st century.

ECONOMIST: Banyan