cen·ter·board 
(sĕntər-bôrd′)
(sĕntər-bôrd′)n.
A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water.
| 单词 | centerboard |
| 释义 | cen·ter·board (sĕntər-bôrd′)n. A movable keel in a sailboat that can be pivoted upward to reduce the boat's draft in shallow water. |
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