人生在得失中成长

Sometimes.

有时候

I hope when I grow up quickly.

希望快点长大

When I grow up.

长大了

I find that I have lost my childhood.

发现失去了童年

When I am single.

单身时

I start to admire the sweetness of loves.

开始羡慕恋爱时的甜蜜

When I am in love.

恋爱时

I miss the freedom when I am single.

怀念单身时的自由

Many things always feel good when you are not obtained.

许多事情在没有得到时感觉很美好

Only after you obtaining these.

得到后

do we begin to understand.

开始明白

"When we get we also lose"

我们在得到的同时也在失去