daggerboard的翻译，读音

例句

The daggerboard has the same function, but rather than swinging down, it is inserted like a blade down through a slot in the hull to protrude like a thin keel below the hull. 这种活动披水板的功能和活动龙骨一致，但它并非旋转到船底，而是像刀刃一样沿着船底的某个轨迹插下去，像一条薄龙骨那样凸出于船底之下。