You can't really know a boat until you've been on it under sail.

你若没有驾它出海，就不可能真正了解这艘船。

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Once the power begins to run down, an afternoon or so at sea under sail will recharge the batteries, says William Ray, Paracas's director of engineering.

帕拉·卡斯工程总监威廉姆•雷说，一旦电源开始耗尽，在海上扬帆一个下午左右就可以给电池充电。

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When the boat is under sail, water forced through the duct turns the blades of a small hydroelectric generator that charges a bank of lithium-ion batteries.

当船在航行时，被迫通过管道的水旋转一个小型水轮发电机的桨叶，发电机给一组锂离子电池充电。

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An old expression of the sailors that is still heard is to sail under false colors.

VOA: special.2009.05.24

Today,a person,not a ship, is said to sail under false colors.

VOA: special.2009.05.24

We almost made it under sail and oar, but Norman, the skipper of the safety yacht, towed us the final half-mile to the anchorage.

WSJ: The Low-Tech, High-Stakes Way to Sail Scotland

Very few ships worldwide sail under U.S. flag and with an all-American crew.

FORBES: Venezuela Frees U.S. Ship And Crew After Smuggling Investigation

"People keep their little sail boat, or canoe under the hut or next to the hut, " Mr White continued.

BBC: NEWS | UK | England | Dorset | 'Garden shed' beach hut for sale