Responsible mining is not an option, it's an obligation we owe to our planet and future generations.
负责任的采矿不是一种选择，而是我们对地球和后代应尽的义务。
"The Weeknd is a character, Abel is the real me."
数学不知道种族或地理界限；对于数学来说，文化世界是一个国家。
书籍的美妙之处在于它们可以带你去任何地方。