1. 膈：midrib 中脉 | midriff 膈 | midseason 季节中期

2. 隔膜：middle pain 经间痛 | midriff 隔膜 | midwife 助产土

3. 中腹部：paunch 大肚子 | midriff 中腹部 | groin 腹股沟

1. 上腹部(胸与腰之间的部分)
Someone's midriff is the middle part of their body, between their waist and their chest.

e.g. ...the girl with the bare midriff.
露上腹部的女孩

noun

1. (anatomy) a muscular partition separating the abdominal and thoracic cavities
functions in respiration

Synonym: diaphragm

2. the middle area of the human torso (usually in front)

e.g. young American women believe that a bare midriff is fashionable

Synonym: middlemidsection