As we know from attempting to use waterfall methodologies for years, we rarely know everything up-front, and our attempts to get it right at first are imperfect.
从多年尝试瀑布模型的经验中我们得出，我们很少能够事先预知所有的事，试图在一开始就做对是不完美的。
2
Mortals, inferior , imperfect creatures like us want to emulate the gods, to be like them. Right?
向我们这样渺小，不完美的凡人，想要学习神，变得跟他们一样，对么？
3
That is not effectively protect the right to relief. Then China have not been formally established the "environmental right", and the corresponding environmental tort relief system is imperfect.