Something that is lightweight weighs less than most other things of the same type.
lightweight denim.
轻薄的粗斜纹棉布。
If you describe someone or something as lightweight, you mean that they are not very important or impressive.
Some of the discussion in the book is lightweight and unconvincing.
书中的一些讨论无足轻重而且缺乏说服力。
lightweights
Lightweight is a category in some sports, such as boxing, judo, or rowing, based on the weight of the athlete.
By the age of sixteen he was the junior lightweight champion of Poland.
16岁时他已是波兰少年轻量级冠军。
If you describe someone as a lightweight, you are critical of them because you think that they are not very important or skilful in a particular area of activity.
Brian considered Sam a lightweight, a real amateur.
布赖恩认为萨姆是个无足轻重的人,是个真正的业余选手。