Centreboard
n. 船底中心垂直升降板, 装有升降板的小船
📖 牛津释义
centreboard
n moveable board that can be raised or lowered through a slot in the keel of a sailing-boat to prevent drifting 中插板（船底中心防止船漂移的垂直升降板）. =>illus at dinghy 见dinghy之插图.
🗣️ 情景例句
It works!
有效！
Happy birthday!
祝贺您生日快乐！
What's your trouble?
你哪儿不舒服？