back a sail

基本解释

Robinson explore the island, fight with cannibals, visit a lost village and construct a boat to sail back home!
岛，与食人怪战斗，探寻一个消逝了的村庄，建造一艘新船返回故乡！
A father is neither an anchor to hold us back, nor a sail to take us there, but a guiding light whose love shows us the way.
父亲，既不是拉住我们的锚，也不是带我们航向远方的帆，而是用爱为我们指引前方道路的那道光。
At the top of the sail is a short spar called the gaff, which allows the sail to extend back along a fourth side, gaining size over a triangular sail of the same height.
与双桅帆或高低桅帆不同，前侧的桅杆要比后侧的矮（有时尺寸相同）。前桅前方有一到多个前帆。

The key was not to try to dig a Suez-type of canal, a great sea-level trench from ocean to ocean, but to create a lock-and-lake canal, where the ships are lifted up by a series of locks to a man-made lake, and then they sail across that lake, and then they are set back down on the other side by another series of locks.
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