mast collar

例句：

1. 1. The sailor wore a mast collar to keep warm in the cold weather.
   水手穿着船桅领扣来保暖。
2. 2.The captain had a mast collar made of thick wool for extra warmth.
   船长做了一件厚羊毛的船桅领扣来增加保暖。
3. 3. The crew members all wore mast collars as they worked on the sails.
   船员们在修理帆时都戴着船桅领扣。