time passes very quickly
时间过得非常快 (shijian guo de feichang kuai)
"Time flies when you’re having fun."
"当你玩得开心时，时间飞逝" (dang ni wan de kaixin shi, shijian feishi)
The relationship between how much of something is available...
to earn enough money to live on
a strong motivation to achieve something
to achieve a position of advantage or superiority
Used to strongly agree with someone
someone suddenly understands something
