santanna唱给brittany的那首landslide是什么意思。。。求解释。。。

歌词是i took my love and i took it down
climbed a mountain then i turned around
and i saw my reflection in the snow covered hills
well the landslide brought me down
oh, mirror in the sky
what is love?
can the child within my heart rise above
can i sail through the changing ocean tides
can i handle the seasons of my life
uh ah ... uh ah ....
well, i've been afraid of changin'
'cause i've built my life around you
but time makes you bolder
children get older
i'm getting older too
well ...
so, take this love, take it down
if you climb a mountain and turn around
and if you see my reflection in the snow covered hills
well the landslide will brought it down
if you see my reflection in the snow covered hills
well maybe ...
the landslide will bring it down.
里面well, i've been afraid of changin'
'cause i've built my life around you
but time makes you bolder
children get older
i'm getting older too
well ...
这段我明白，剩下那些山体滑坡，季节交替，远渡重洋什么的是什么意思?
ps,哪里可以下到glee版的这首歌啊~谢各位大神了~