daggerboard
['dægəbɔ:d]
n. [船]活动披水板, 中插板
例句与用法:
Put the dagger back in its sheath.
把短剑插回鞘内。
He fell a victim to the dagger of the assassin.
他死于刺客的匕首之下。
He looks daggers at the enemy.
他对敌人怒目而视。