It has a huge mast, with the mainsail attached.

它有一个巨大的桅杆，主帆附着上面。

He nods with such satisfaction that the fat under his chin sways between his shoulders like a mainsail in stormy conditions.

他满足地点头，脖子上的肥油像迎风的帆绕着肩膀飘扬。

John drops the mainsail and sets the autopilot.

下主帆，并动了自动。

I was very much tired, and disposed to sleep, which my mistress perceiving, she put me on her own bed, and covered me with a clean white handkerchief, but larger and coarser than the mainsail of a man-of-war.

我非常疲倦，很想睡觉，我的女主人看出了这一点，便让我躺在她的床上，并用一块干净的白手帕盖住我，但那块手帕比战舰的主帆还要大还要粗。

How do you get the mainsail up? Uh...

要怎么把主帆升上去。

So they literally windsurf off the wind that comes off the mainsail and they hang.

所以他们真的是利用主帆吹来的风帆冲浪，然后悬挂起来。