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1. 下颚突出的：underhanded 秘密的 | underhung 下颚突出的 | underlaid 置于下面的
2. 下颌突出的：underhung rudder 吊舵铲型舵 | underhung 下颌突出的 | underice navigation 冰下导航
3. 上颚突出的：underhorn /下角/ | underhung /上颚突出的/ | underinsurance /保险不足/
4. 悬吊的,在轨上滑动的：underestimate 估计不足,估价过低,低估 | underhung 悬吊的,在轨上滑动的 | underlay 垫衬,垫层,衬底,铺底层
adj
1. underhung的意思
1. having a lower part projecting beyond the upper
e.g. an underhung jaw
undershot bulldog
Synonym: undershot underslung
2. supported from below especially resting on a track instead of suspended from above
e.g. underhung sliding doors