我一直认为我想成为职业球员,我一直知道要做到这一点我必须做出很多牺牲。
I always thought I wanted to play professionally, and I always knew that to do that I'd have to make a lot of sacrifices.
我的心因为爱情的痛楚要胀裂开来。
"The difference between correlation and causation is fundamental in empirical work."