他们用力拉绳子以保持帆的平衡。
名词：luff指的是帆的前缘。
这是另一个使用百慕大帆的单桅帆船的例子。
在不同的风力状况下，使用两面帆的不同组合可提供不同的效果。
Different combinations using only two sails at a time have benefits for different conditions, such as stronger winds.
老人将卷着帆的桅杆靠着墙立着，男孩把箱子和其它渔具就放在旁边。
The old man leaned the mast with its wrapped sail against the wall and the boy put the box and the other gear beside it.
总而言之，一艘双桅帆的总体帆面面积和一艘同样尺寸的单桅帆差不多。
In all, a ketch carries about the same total square footage of sail area as a sloop of the equivalent size.
谢利博士说，太阳帆的设想是可行的，唯一的问题是“你愿意为它花钱吗？”
Dr. Shirley said that the solar sail was feasible and that the only question was, “Do you want to spend some money?”
因此，双桅帆船除了桅杆和帆的区别之外，在其他很多方面也会和单桅帆船有所不同。
Many ketches, therefore, are different from sloops in ways other than just the masts and sails.
单桅艇的最主要优势在于帆的易操控性，如在抢风转变航向（tacking）时，不用去管前帆。
A primary advantage of a cat rig is the ease of sail handling, such as not having to deal with jibsheets when tacking.
双桅帆的主要优势在于每一面帆都比同尺寸的单桅帆船上的相应帆尺寸要小一些，使得航行操纵也容易一些。
The primary advantages of a ketch are that each of the sails is usually somewhat smaller than on a sloop of equivalent size, making sail handling easier.
太阳帆的概念提出要追溯到16世纪，德国天文学家Johannes Kepler(开普勒)首先提出利用太阳能驱动物体在星际旅行。
The concept of space sails dates back the 16th century, when German astronomer Johannes Kepler first came up with the idea of using the sun's energy to propel objects through space.
在节目结束后的一个在线交流中，大多数网友都表示希望Dahl在未来的日子一帆风顺，同时也因为通过他了解了监狱里的生活而对他表示了感谢。
In an online chat after the show, most of the posters wished Dahl good luck for the future and thanked him for giving them an insight into prison life.
然而，尽管它使用三面帆，却并不意味着它的帆面积比同等尺寸的单桅帆更大。
The fact of three sails does not necessarily mean that the sail area is larger than on a sloop of the same size, however.
历史告诉我们，任何伟大的事业都不可能一帆风顺，不可能一蹴而就。
History tells us that when pursuing a great cause, we could never expect a smooth sail or reach the destination overnight.
帆面比大多数巡航帆船的帆要大得多，但基本的结构是一样的。
The sails are much bigger than found on most cruising sailboats, but the general rig is the same.
最后，来介绍这种巨大的三桅杆方帆船，带有五对方形帆和数面前帆，船尾还有一面大三角帆(lateen sail)。
Finally, here’s a large three-masted square-rigger flying five tiers of square sails and several head sails, with a lateen sail aft.
因此，双桅帆船使用三面主要的帆：与单桅帆船一致的主帆，前帆，以及尾桅帆。
A ketch therefore USES three primary sails: the mainsail and head sail, as on a sloop, plus the mizzen sail aft.
喷气推进实验室的科学家们甚至考虑在1986年哈雷彗星经过时发射一个太阳帆与它会合，并沿着它的轨迹飞行。
Scientists at the Jet Propulsion Laboratory even once investigated sending a solar sail to rendezvous and ride along with Halley's Comet during its pass in 1986.
如果想玩更刺激的，那就可以选择水上滑翔降落伞(sky-skiing)——人被绑在一个像降落伞一样的帆上，由一艘船拉着在水面上前进。
For the more adventurous, sky-skiing involves being strapped into a harness attached to a parachute-like sail, and pulled along over the water by boat.
拥有三面帆也提供了更多控帆组合的可能性和灵活性。
Having three sails also allows for more flexible sail combinations.
请注意：在目前我们展示的两种单桅帆船中，前帆都连接到桅杆的顶端。
Note that in both of the sloops shown so far, the jib reaches to the top of the masthead.
但是诺贝尔评奖委员会给我们带来了可喜的信息：高扬起你的帆吧，风已转向，该顺风远航了。
But this will also be a grand adventure and we can take heart in the message the Nobel committee has sent: look to your sails, the tide has turned.
一旦进入轨道，这些探测器就会展开薄薄的帆，然后在来自地球的强大激光束推动下，一个接一个地出发，就好像迁徙的蝴蝶从太空掠过。
Once in orbit, the probes would unfold thin sails and then, propelled by powerful laser beams from Earth, set off one by one like a flock of migrating butterflies across the universe.
这种辐射压力被认为是彗尾形成的原因。 另外，它也是太阳帆在太空中前进的动力来源。
This radiation pressure is thought to shape the tails of comets and is useful for pushing solar sails in space.
该计划的起步阶段一帆风顺。
我知道学习的道路并不总是一帆风顺，有时候学术道路是艰难的，崎岖的。
I know it isn't always rainbows and butterflies, sometimes academic life is tough, and full of rough patches.
不管是在创业初期还是公司成熟期，外部专家帮助可以让你的公司一帆风顺，而不至于倒闭。
Getting help from outside experts can mean the difference between smooth sailing and a sinking ship, both at startup and as your business matures.
在奈邦卡特边上是氛围轻松的帆船总会酒吧，在海上驾帆或划船度过一天后，这里是个休憩的好去处。
Next door to Knai Bang Chatt, the breezy Sailing Club bar is a relaxed bookend to a day of sailing or kayaking.
在奈邦卡特边上是氛围轻松的帆船总会酒吧，在海上驾帆或划船度过一天后，这里是个休憩的好去处。
Next door to Knai Bang Chatt, the breezy Sailing Club bar is a relaxed bookend to a day of sailing or kayaking.
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