Just put yourself in a cheerful and bright environment, nurture some flowers in your room, or keep a pet, the vibrant plants or animal is always a key to open a happy door.
把自己处在一个欢快明亮的环境里，在房间种点植物或者养只宠物，生机勃勃的植物和动物是打开快乐大门的钥匙。
Why do tunes in a major key, such as Singin' in the Rain, sound cheerful, while those in minor keys – Pink Floyd's Another Brick in the Wall, say – sound gloomy and depressing?
为什么大音阶的曲调，如《万花嬉春》（又名《雨中曲》）的声音显得非常轻松愉快，而小音阶的乐曲，譬如像《墙上的另一块砖》听起来却十分悲观沉闷?。
Why do tunes in a major key, such as Singin' in the Rain, sound cheerful, while those in minor keys – Pink Floyd's Another Brick in the Wall, say – sound gloomy and depressing?
为什么大音阶的曲调，如《万花嬉春》（又名《雨中曲》）的声音显得非常轻松愉快，而小音阶的乐曲，譬如像《墙上的另一块砖》听起来却十分悲观沉闷?。
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