把你的心挂在袖子上不是一个好计划;你应该把它放在里面,那里它运作得最好。
里氏替换原则是面向对象编程中的一个基本概念,确保派生类可以替代其基类使用,而不会改变程序的正确性。
从化石燃料中受益最少的国家不应承担气候变化的最沉重负担。
Looking back at the 21-year-old that I was at graduation, is a slightly uncomfortable experience for the 42-year-old that she has become. Half my lifetime ago, I was striking an uneasy balance between the ambition I had for myself, and what those closest to me expected of me.