我们必须在经济增长和环境管理之间取得平衡。
We must balance economic growth with environmental stewardship.
I don't need a reason to be happy. I choose to be.
旅程最好用朋友来衡量,而不是用英里。
在计算学习领域,关键不仅在于学习,而在于高效地学习。