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。
Sustainability isn't an option anymore; it's a necessity for any responsible mining company.
A play is not an essay, nor should it be treated as such.
如果你不愿意冒险,你将一事无成。
任何圆的面积等于一个直角三角形,其中一条直角边等于半径,另一条等于圆的周长。
"A great book is a great adventure."