lightweight + noun
形容词用法，表示重量轻或便携。
This is a lightweight laptop.
这是一台轻便的笔记本电脑。
不到平均重量的人/物; 轻量级; 无足轻重的人; 性格不够强的人
lightweights — plural of lightweight
根据规则规定的特定体重级别或成员,介于较重的次中量级和较轻的羽量级之间。具体见各运动的维基百科；体重在 131 至 135 磅之间的职业拳击手；根据规则规定的特定体重类别,与开放或重量级类别分开；无足轻重却厚颜放肆的人；规则规定的体重级别,介于较重的中量级和较轻的羽量级之间。
a person or thing that is below average weight, especially a boxer in the lightweight class (131–135 pounds)
根据规则规定的特定体重级别或成员,介于较重的次中量级和较轻的羽量级之间。具体见各运动的维基百科
A particular weight class, or member of such, as prescribed by the rules, between that of the heavier welterweight and the lighter featherweight. See Wikipedia for the specifics of each sport.
体重在 131 至 135 磅之间的职业拳击手
a professional boxer who weighs between 131 and 135 pounds
根据规则规定的特定体重类别,与开放或重量级类别分开
A particular weight category as prescribed by the rules, separate from an open or heavyweight class.
无足轻重却厚颜放肆的人
someone who is unimportant but cheeky and presumptuous
规则规定的体重级别,介于较重的中量级和较轻的羽量级之间。
A competitive weight division as prescribed by the rules, between the heavier middleweight and the lighter featherweight.
体重不超过 132 磅的业余拳击手
an amateur boxer who weighs no more than 132 pounds
无足轻重或能力低下的人。
One of little consequence or ability.
酒量小的人,喝少量酒就醉。
A person who cannot handle their drink; one who gets drunk on very little alcohol.
耐力差的人。
A person with low endurance.
胜算极小的政治候选人。
A political candidate with little chance of winning.
重量轻或相对较轻的东西。
Something that is light in weight, or relatively so.
The lightweight champion defended his title last night.
这位轻量级冠军昨晚成功卫冕了他的头衔。
用法提示：lightweight作为名词，指轻量级拳击手。
This backpack is made of a lightweight fabric, perfect for hiking.
这款背包由轻质面料制成，非常适合徒步旅行。
用法提示：lightweight作为形容词，表示重量轻的。
She dismissed his concerns as lightweight and irrelevant.
她认为他的担忧无足轻重且无关紧要。
用法提示：lightweight作为形容词，表示不重要的、肤浅的。
形容词用法，表示重量轻或便携。
This is a lightweight laptop.
这是一台轻便的笔记本电脑。
名词用法，指轻量级拳手或体重轻的人。
He is a lightweight in boxing.
他是轻量级拳击手。
比喻用法，指无影响力或能力不足的人。
Don't listen to him; he's a political lightweight.
别听他的，他在政治上无足轻重。
语气更强，更口语化；lightweight侧重性格或能力不足
更正式，强调毫无地位或影响
grammar · medium
易错句子This bag is light weight.
正确表达This bag is lightweight.
lightweight 是一个复合词，应写为一个单词，而非两个单词。中文学习者常将其误写为 "light weight"，可能是受形容词 "light" 和名词 "weight" 分离的影响，但标准英语中应连写。
grammar · medium
易错句子You can lightweight the load by removing items.
正确表达You can lighten the load by removing items.
lightweight 是形容词或名词，不是动词。中文学习者可能受翻译“减轻重量”影响，直接将其用作动词，但英语中需使用 "lighten" 或 "make lighter"。
名词反义词：指重量大或重要的人或事物
形容词反义词：指重量大
light 作为形容词泛指重量轻、颜色浅或明亮，而 lightweight 特指重量低于平均或轻量级，使用范围更窄。
featherweight 是比 lightweight 更轻的拳击级别（126磅以下），而 lightweight 是135磅以下，级别不同不可互换。
轻质材料
The bicycle is made of lightweight material.
这辆自行车由轻质材料制成。
轻量级冠军
He became the lightweight champion last year.
他去年成为了轻量级冠军。
轻质布料
This shirt is made of lightweight fabric for summer.
这件衬衫由轻质布料制成，适合夏天。
轻量化设计
The aircraft features a lightweight design.
这款飞机采用了轻量化设计。
轻量级软件
We need lightweight software for the old computer.
我们需要一款轻量级软件给这台旧电脑。
轻量级拳击手
The lightweight boxer won the match.
这位轻量级拳击手赢了比赛。
轻量级概念直接与重量相关，lightweight指低于平均重量。
在拳击运动中，lightweight是一个体重级别。
轻量级物品常被描述为便携，易于携带。
轻量级设计往往追求极简，减少不必要的组件。
与lightweight同属拳击及体重分级体系，但重量更轻。
发长 /aɪ/ 音 (如 high, light)
Same pattern, same sound
Dictionary facts from ECDICT, WIKTIONARY.