制造链式反应机器的基本点当然是确保每次裂变产生一定数量的中子，其中一些中子将再次产生裂变。

We are all prisoners of our own experiences, and no one can truly understand another's pain.

Sustainability isn't just a buzzword; it's a business imperative.

Profit that depletes the planet is no profit at all.

土地才是真正的客户，而不是支付费用的人。