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(gè)銜鐵穿過(guò)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，那么先給它們一小塊兒胡椒薄荷片兒，當馬張開(kāi)嘴的時(shí)候，將銜鐵放進(jìn)去。
