Sweatpants are soft, loose, warm trousers with an elastic waist, usually made of thick cotton, often with a tie string at the top and sometimes narrow bands at the ankles.

Sweatpantssweatpants運動棉褲 are soft, loose, warm trousers with an elastic waist是柔軟、寬鬆、保暖、腰部有鬆緊帶的褲子, usually made of thick cotton通常是厚棉布做的, often with a tie string at the top常常上面有束帶, and sometimes narrow bands at the ankles有時候腳踝處還有窄的束口.

They were first made for athletes to keep their legs warm before and after exercise — hence the 'sweat' — but today most people wear them at home, for sleeping, for lazy weekends, or for going out to buy breakfast. Because of that, sweatpants carry a feeling of comfort and of not trying: 'I spent the whole weekend in sweatpants' means you did very little, and 'You're not wearing sweatpants to the wedding' says they are too casual.

They were first made for athletes to keep their legs warm before and after exercise它們最早是為運動員做的，讓他們運動前後保持腿部溫暖—— hence the 'sweat'這就是'sweat（汗）'這個字的由來—— but today most people wear them at home但現在大多數人是在家裡穿, for sleeping睡覺穿, for lazy weekends懶洋洋的週末穿, or for going out to buy breakfast或出門買早餐穿. Because of that因為這樣, sweatpants carry a feeling of comfort and of not tryingsweatpants帶著一種舒適、不費心裝扮的感覺: 'I spent the whole weekend in sweatpants'『I spent the whole weekend in sweatpants（我整個週末都穿著sweatpants）』 means you did very little意思是你什麼都沒做, and 'You're not wearing sweatpants to the wedding'而『You're not wearing sweatpants to the wedding（你不會穿sweatpants去婚禮吧）』 says they are too casual是在說那樣穿太隨便了.

The word is plural in form and always takes a plural verb — 'my sweatpants are dirty' — and to count them you say 'a pair of sweatpants'.

The word is plural in form這個字形式上是複數, and always takes a plural verb而且動詞永遠用複數—— 'my sweatpants are dirty'像'my sweatpants are dirty（我的sweatpants髒了）'—— and to count them you say 'a pair of sweatpants'要算數量時要說'a pair of sweatpants（一件sweatpants）'.

This is the American word. British speakers usually say 'tracksuit bottoms' or 'joggers'; 'jogging bottoms' is also heard.

This is the American word這是美式說法. British speakers usually say 'tracksuit bottoms' or 'joggers'英式說法通常是'tracksuit bottoms'或'joggers'; 'jogging bottoms' is also heard'jogging bottoms'也聽得到.

The matching top is a 'sweatshirt', and together they make a 'sweatsuit' or 'tracksuit'.

The matching top is a 'sweatshirt'搭配的上衣叫'sweatshirt（運動棉衫）', and together they make a 'sweatsuit' or 'tracksuit'兩件合起來就叫'sweatsuit'或'tracksuit'（運動套裝）.