同根派生 bilge keel相关词英汉例句The keel of the boat was made of steel.這船的龍骨是鋼制的。The keel of her sister ship will be laid by the time she discharges at Calcutta.等它在加爾各答卸貨的時候,它的姊妹船的龍骨就會鋪好啦。bilge keel更多例句