These thumps are replaced by thrills when valvular insufficiencies or stenoses or congenital defects are present . 这些撞击在瓣膜闭锁不全或狭窄，或者有先天性缺损时被震颤所代替。
Craters resembling those on the moon are produced on the earth both by volcanic activity and by meteoric impact . 由于火山爆发和陨星的撞击，类似于月球上的环形山地在地球上产生了。
As the turtle swims across the oceanarium , the first porpoise swoops down from above and butts his shell with his belly . 当海龟游过水族馆时，第一只海豚从上方扑下去，并用腹部撞击龟壳。
He saw his galleys rammed by the sharp prows of other galleys; his fighting-men shot down; his ships boarded . 他看见自己的军舰被敌舰的尖锐船头所撞击；看见他的战士被射死；他的船只被登占了。
The only sound that reached them now through the heat of the mornig was the long, grinding roar of the breakers on the reef . 透过早晨的热气他们所听到的唯一声响，就是波浪撞击着礁石那永无休止的，恼火的轰鸣。
That collision caused the demise of the dinosaurs 那次撞击导致了恐龙数量减半。
Was he bumping into objects or falling down a lot 他总是撞击某物或经常摔倒么？
Discussion on basic theory suited for impact grinder 适用于撞击机的基础理论探讨
Sometimes a sheep needs pushed through the fence 有时候确实有些绵羊会撞击篱笆
Sound of glass bottles striking together follows 传来了玻璃瓶互相撞击的声音。
