Don't know why the mood is always very heavy

Don't know why the mood is always very heavy
Don't know why the mood is always very heavy

Don't know why the mood is always very heavy
不知道为什么心情总是这么沉重

不知心情总是很沉重

不知道为什么心情总是非常沉重

不知道为什么心情一直很沉重

不知道为什么心情总是那么沉重
don't know = 不知道
why = 为什么
mood = 心情
always = 总是
very heavy = 很沉重