Pteriidae
珍珠貝科
??? 情景例句
Yes, there is.
有，有心事
You make the failure complete when you stop strying.
不再努力之時(shí)，就是完全失敗之日。
The wheels scooped up stones which hammered ominously under the car.
車(chē)輪攪起的石塊錘擊車(chē)身，發(fā)出不祥的錘擊聲。