buff

/bʌf/📚 19157 51 1
Something that is buff is pale brown in colour. 浅棕色的

noun [具体名词]浅黄色,米色;暗黄皮革;爱好者,……迷;擦拭轮(或棒,垫),抛光轮

You use buff to describe someone who knows a lot about a particular subject. For example, if you describe someone as a film buff, you mean that they know a lot about movies.
爱好者

adjective [原级]身体强健的,肌肉发达的;浅黄褐色的

in a condition of high physical fitness and body tone, maintained by regular exercise
体格健美的

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