The museum curator explained the foible of each antique sword during the corporate tour.

博物館館長在企業參訪導覽中，講解了每把古劍的劍身弱部。

Our product catalog email describes how the blade's foible is made more flexible.

我們的產品型錄電子郵件說明了劍刃弱部如何被製作得更有彈性。

At the client meeting, the fencing coach showed how to strike an opponent's foible.

在客戶會議上，擊劍教練示範如何攻擊對手劍身的弱部。