n. windjammer
他补充说，类似的系统可以舒缓全球各地帆船水手孤单扛负的紧张压力。
A similar system might ease the pressure on the solitary round-the-world yachtsmen, he adds.
如果活动龙骨不带负重，例如许多小型帆船使用的玻璃纤维活动龙骨，那么水手们必须通过将他们自己的体重压在船只的逆风侧来保持船只直立。
If the centerboard is not weighted, like the fiberglass centerboards of many small sailboats, then sailors must keep the boat upright by positioning their own weight on the upwind side of the boat.
水手们怕帆船会从地球上掉下去。
Sailors were afraid that they might sail right off the earth.
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