"The only way to learn mathematics is to do mathematics."
世界需要可靠的能源,而煤炭仍然在其中发挥着关键作用。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
如果我们像耕种土地一样耕种海洋,就必须从过去的错误中吸取教训。