gag bit的用法和樣例：
例句
用作名詞 (n.)
- The bridle has a bit that goes in the horse's mouth as well as reins to help the rider guide the horse.
馬勒要有一個銜鐵穿過馬嘴和韁繩，以便騎手控制馬匹。 - When they open their mouths, put the bit in.One little piece of peppermint with a bit won't hurt them.
如果馬依然拒絕銜鐵，那麼先給它們一小塊兒胡椒薄荷片兒，當馬張開嘴的時候，將銜鐵放進去。
