The elegance of a mathematical proof often mirrors the efficiency of the algorithm it describes.
"Illustrations are not just pictures; they are the soul of the story."
过度捕捞是杀鸡取卵,我们必须坚持科学捕捞,给海洋留下休养生息的时间。
你在20多岁做出的选择将定义你的30岁及以后。