underbelly/ˈʌndərˌbɛli/复数形式underbellies1下腹部, 腹部下面的柔软部分the soft part under the abdomen of an animalCopy同义词： underbody2弱点, 无防备的一面the quality of being weak or unprotectedCopy3下侧, 腹部lower sideCopy