In boxing, fighters are put into weight classes so that people of similar size fight each other. A welterweight is a boxer in the class with an upper limit of about 66.68 kg (147 pounds) — heavier than a lightweight, lighter than a middleweight.

In boxing在拳擊運動裡，fighters are put into weight classes選手會被分到不同量級，so that people of similar size fight each other讓體型相近的人互相對戰。A welterweight is a boxer in the class with an upper limit of about 66.68 kg (147 pounds)welterweight是量級上限大約66.68公斤（147磅）的拳擊選手，heavier than a lightweight, lighter than a middleweight比輕量級重，比中量級輕。

The word works two ways: as a noun for the boxer ('he was a welterweight'), and before another noun for the class or the fight ('the welterweight title', 'the welterweight division').

The word works two ways這個字有兩種用法：as a noun for the boxer ('he was a welterweight')一個是當名詞指選手本人，像'he was a welterweight'他是個次中量級選手，and before another noun for the class or the fight ('the welterweight title', 'the welterweight division')另一個是放在名詞前面指量級或比賽，像'the welterweight title'次中量級冠軍、'the welterweight division'次中量級組別。

The same class names are used in other combat sports too, such as wrestling, kickboxing and MMA, though the exact weight limit differs from sport to sport. Outside sport, people sometimes borrow these boxing words to talk about size or importance in general — calling a company or a politician 'a middleweight' or 'a heavyweight' — but 'welterweight' is used this way much less than 'heavyweight' is.

The same class names are used in other combat sports too同樣的量級名稱在其他格鬥運動裡也會用到，such as wrestling, kickboxing and MMA像是摔角、踢拳和綜合格鬥，though the exact weight limit differs from sport to sport不過每種運動的確切體重上限不太一樣。Outside sport在運動場合以外，people sometimes borrow these boxing words to talk about size or importance in general有時候人們會借用這些拳擊用語來泛指大小或重要性，calling a company or a politician 'a middleweight' or 'a heavyweight'像是稱一家公司或一位政治人物是'a middleweight'（中量級）或'a heavyweight'（重量級），but 'welterweight' is used this way much less than 'heavyweight' is但'welterweight'這樣用的頻率比'heavyweight'少得多。