made of thinner material and less heavy than usual （布料）薄且轻的 a lightweight jacket 轻便的短上衣 a lightweight aluminium engine 轻巧的铝制发动机 Topics Physics and chemistry c1 (disapproving) not very serious or impressive 不严肃的；给人印象不深的 a lightweight book 内容平庸的书 He was considered too lightweight for the job. 有人认为他资历太浅，不适合做这工作。 🔊 🔊 [uncountable, countable] a weight in boxing featherweight welterweight boxing kilograms boxer 轻量级拳击手（体重在 57 至 61 公斤之间） a lightweight champion 轻量级拳击冠军 Topics Sports: other sports c1 [countable] a person or thing that weighs less than is usual 体重低于通常重量的人；比通常重量轻的东西 [countable] (informal, disapproving) a person or thing of little importance or influence 无足轻重的人（或事）；没有影响力的人（或事） a political lightweight 政治上的无名之辈 He's an intellectual lightweight (= he does not think very deeply or seriously) . 他是个智力平庸的人。 🔊 🔊