主帆是由真正的篷布手工切割和缝制而成的。
将主帆卷起或放开的控制索。
Definition: the control line that pulls the mainsail in or out.
他果断地砍断了缆绳，主帆滑落了下来。
He resolutely hacked off the cable and the sail slipped down.
航行中后桅帆基本上就像第二面主帆一样工作。
主帆耷拉着，像一面旗帜。
你最好拉紧主帆索。
主帆像一面旗子耷拉着。
主帆像一面旗子耷拉着。
我知道主帆是什么。
我迅速放下三角帆扔到甲板上，但却难以对付主帆。
The jibs I speedily doused and brought tumbling to the deck, but the main-sail was a harder matter.
55岁的康维转动钥匙，爬上桅杆想把主帆降下来，但船身已开始向右舷倾斜。
Conway, 55, turned the key and scrambled to drop the mainsail, but the craft was already rolling onto its starboard side.
单桅帆船有一个主帆、三角帆和龙骨但没有船首斜桁的单桅小帆船。
A small sloop with a mainsail, jib, and keel but no bowsprit.
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.
安装于船用圆材上的大三角帆，展开时与主帆相对，当赛艇顺风行驶时使用。
A large triangular sail set on a SPAR that swings out opposite the mainsail, used on racing yachts when running before the wind.
这时，船正在驶过圆塔，青年就喊道：“注意，准备收主帆，后帆和三角帆！”
Then, as they were just passing the Round Tower, the young man shouted: "Stand by there to lower the topsails and jib; brail up the spanker!"
注意，桅杆在船里的位置极为靠前，几乎就在船头上，因此可以有空间装一面帆脚很长的主帆。
Note that the mast is positioned very far forward, almost at the bow, making room for a very long-footed mainsail.
西斯·潘尼·奥拉号正鼓起主帆和两个大三角帆前进，美丽的白帆在阳光下如雪似银。
The Hispaniola was under her main-sail and two jibs, and the beautiful white canvas shone in the sun like snow or silver.
这仍然是一个百慕大帆，但主帆成比例地变大了，而前帆则相应变小，以便于操纵并获得最大动力。
This is still a Bermuda rig, but the mainsail is proportionally larger and the jib smaller, for ease of handling and maximum power.
我处在水手舱背风的一侧，主帆仍张满了风，挡住了我的视线，使我看不到后甲板的一部分。
I was on the lee side of the forecastle, and the mainsail, which was still drawing, concealed from me a certain portion of the after-deck.
在一艘百慕大操纵单桅帆船(Bermuda - rigged sloop)上，主帆的形状是高三角形。
In a Bermuda-rigged sloop the mainsail has a tall, triangular shape.
但由于天气恶劣，海面上4米多高的海浪将帆船上的主帆给撕破了，这个重大的时刻也因此被推迟了两个多小时。
The big moment had been delayed for more than two hours due to 4m swells and a torn mainsail.
例如，当风速在某个强度上时，单桅帆可能必须将主帆四叠起来以减少帆面积，而双桅帆则可以只用前帆和后帆来顺利航行。
For example, with the wind at an intensity that a sloop might have to double-reef the main to reduce sail area, a ketch may sail very well under just jib and mizzen.
例如，当风速在某个强度上时，单桅帆可能必须将主帆四叠起来以减少帆面积，而双桅帆则可以只用前帆和后帆来顺利航行。
For example, with the wind at an intensity that a sloop might have to double-reef the main to reduce sail area, a ketch may sail very well under just jib and mizzen.
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