1·The keel hit the rock first.
船龙骨先撞到岩石。
—— 《柯林斯英汉双解大词典》
2·After reviewing the wheel designs so far, we're going for a simple V-shaped keel.
迄今，在评估了轮胎设计后，我们选取了一种简单的V型龙骨。
3·On centerboard sailboats, the centerboard functions like a keel to keep the boat from being blown sideways.
在使用活动龙骨的帆船上，活动龙骨的功能和固定龙骨一样，是防止船只被吹打得侧晃。
4·The keel of the boat which struck us came into the boat, on the right side. We could see the writing and details on the cargo ship.
这位工作人员还说，碰撞事故发生后客轮上的乘客可以看到撞到船上的货轮的龙骨。
5·She thought she could distinguish her father's castle, and upon it her aged grandmother, with the silver crown on her head, looking through the rushing tide at the keel of the vessel.
她的老祖母头上戴着银子做的皇冠，正高高地站在王宫顶上；她透过激流朝这条船的龙骨了望。