The past is a ghost, haunting the present.
慈祥的母亲大多都有着败家的儿女,这是因为他们不忍心强加管教子女的缘故。
形式验证的挑战在于弥合抽象模型与实际实现之间的差距。
If you want something said, ask a man; if you want something done, ask a woman.