We discerned a sail on the horizon.

我们看见了地平线上的一只帆。

youdao

We went for a sail.

我们乘船兜了一趟风。

《牛津词典》

Noun: the luff is the leading edge of a sail.

名词：luff指的是帆的前缘。

youdao

It seemed to sail on waves of air, just like a sailboat on ocean waves.

VOA: special.2010.10.06

So, in a sense, it says, you know, if you wanted to build a boat that took energy out of the warmth of the air to sail around the world, you can do that.

因此，某种意义上说，它宣称如果你想要造一艘船,通过从空气中获取热量,这是可以做到的。

麻省理工公开课 - 热力学与动力学课程节选

I wish we had a sail, he said, to give you two boys a chance to rest. So they used his coat and one of the oars to make a sail and the boat moved much more quickly.

VOA: special.2010.03.06

That is it is bi-stable like a sail boat that is right side up or upside down.

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Go to the beach, go out for a sail, play golf or read a funny book about happy things.

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It was many years later discovered in a sail loft at Victory barracks, now HMS Nelson, in 1960, covered by gym mats.

BBC: NEWS | UK | England | Hampshire | Nelson's topsail goes on display