This one here is called the main sail.
这个在这里被称为主帆。
Main sail
原声例句
Engvid-Benjamin-课程合辑
Engvid-Benjamin-课程合辑
You can control this main sail, whether it's close or far out, and to have that just in the right place will affect the speed of the boat.
你可以控制这个主帆， 无论它是靠近还是远离，把它放在正确的位置会影响船的速度。
英语百科
Mainsail
A mainsail is a sail located behind the main mast of a sailing vessel.
On a square rigged vessel, it is the lowest and largest sail on the main mast.
On a fore-and-aft rigged vessel, it is the lowest and largest and often the only sail rigged aft of the main mast, and is controlled along its foot by a spar known as the boom. A sail rigged in this position without a boom is generally called a trysail, and is used in extremely heavy weather.
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