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在《PONS词典》中的词汇
在《PONS词典》中的词汇
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单语范例（未经PONS编辑处理）
However, as the size of the boat increases, the benefits of mainsail roller furling increase dramatically.
en.wikipedia.org Aft-mast rigs with no mainsail also require fewer winches to raise and lower sails, and no winches to move the boom.
en.wikipedia.org This occurs most often where the mainsail has significant roach or a very large mainsail, especially combined with narrow hull beam.
en.wikipedia.org A roll mainsail is furled by being rolled within (or around) the mast or boom.
en.wikipedia.org While the mast may interfere with the airflow around the mainsail, the mainsail also serves to reduce the drag on the mast.
en.wikipedia.org