Evanescence唱的那首lithium是啥意思 我查词典lithium是锂的意思 歌里的是不是也是这个意思

难道是人名???

歌词
evanescence - lithium

lithium- don't want to lock me up inside
lithium- don't want to forget how it feels without
lithium- i want to stay in love with my sorrow
oh but god i want to let it go

come to bed, don't make me sleep alone
couldn't hide the emptiness you let it show
never wanted it to be so cold
just didn't drink enough to say you love me

i can't hold on to me
wonder what's wrong with me
lithium- don't want to lock me up inside
lithium- don't want to forget how it feels without
lithium- i want to stay in love with my sorrow

don't want to let it lay me down this time
drown my will to fly
here in the darkness i know myself
can't break free until i let it go
let me go

darling, i forgive you after all
anything is better than to be alone
and in the end i guess i had to fall