jointed mouth bit（双节衔铁）是什么意思？音标发音+图解场景

双节衔铁 /ˈdʒɔɪntɪd ˈmaʊθ ˈbɪt/ n

English: jointed mouth bit · 双节衔铁

释义：Curb bit whose mouth is composed of two articulated parts; it is gentler to the horse than a straight mouth bit.

这个词出现在以下图解场景（1）