Some people find sea cruises relaxing and refreshing. Others hit the water to go fishing, skiing or white-water rafting.

有些人觉得海上旅游能使心情放松并感到清爽，有些人则到水边钓鱼、滑水或泛舟。

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They had an argument about whether to go by sea or by air.

他们在乘海轮还是乘飞机去的这个问题上进行过争论。

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I love to go to the seaside in summer. It feels good to lie in the sun or swim in the cool sea.

夏天的时候我喜欢去海边。躺在阳光下或者在冰凉的海水中游泳感觉都很好。

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It's not entirely clear whether the explosives were meant to go off over cities, causing even more casualties, or over sea.

NPR: Inside the British Probe of the Terrorist Plot

And when we go back to the sea -- whether it is to sail or to watch it -- we are going back from whence we came.

WHITEHOUSE: Presidential Proclamation -- National Oceans Month, 2012

Then the second phase: Discovery, where we push a little more and venture out more into the world: exercises classes prepare the body and the mind for such activities as river or sea kayaking, boogie or surf, zip-lining, stand-up paddle, to go beyond our fears.

FORBES: Let The Sun Do Its Magic: A Wellness Beach Adventure In Costa Rica