For many years, people had dreamed of building a canal across Central America to link the Atlantic and Pacific Oceans.

VOA: special.2010.08.19

And one of the things you often hear about in this discussion is about our oceans and about rainforests, and part of the reason why people want to protect those areas is because you find a lot of natural products in those regions.

其中你们会经常听到的一个,就是关于海洋和热带雨林的讨论,人们想保护这些地方的部分原因,就是因为在这些地方,人们可以发现一些天然产物。

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And,he says the subject of oceans interests him especially because he has been scuba diving since he was a child.

VOA: special.2009.03.25

It also needed a canal across Central America so the Navy could sail quickly between the Atlantic and Pacific oceans.

VOA: special.2010.08.12

And he proposed building a canal in central America to link the Atlantic and Pacific oceans.

VOA: special.2010.08.05

This mixing is a product of the oceans' density and buoyancy.

VOA: special.2011.06.22

"Whatever it is that happens in the oceans, happens to all of us." "A lot of our food resources come from our oceans.

VOA: standard.2010.06.08

Skeptics argue,however, that rising temperatures and warmer oceans are part of a natural cycle and are not convinced the changes are a result of man's pollution.

VOA: standard.2009.05.03

Walsh applauds those advances in technology, but laments that most of the world's deep oceans remain unexplored and that only a handful of vessels - manned or unmanned - exist to do the job.

VOA: standard.2010.06.21

"It is really pollution from our own use of space. Over the last 50 years we have been a bit careless, just as we have been careless with our oceans and rivers over centuries and polluted them.

VOA: standard.2010.07.24