Sustainability isn't an option anymore; it's a necessity for any responsible mining company.
可持续发展不再是可选项；对于任何负责任的矿业公司来说都是必需品。
Always listen to your audience. They will tell you what they want, if you're willing to hear.
作家必须相信他所做的是世界上最重要的事情。即使他知道这不是真的，他也必须坚持这种幻觉。