The founders of a new colony, whatever Utopia of human virtue and happiness they might originally project, have invariably recognized it among their earliest practical necessities to allot a portion of the virgin soil as a cemetery, and another portion as the site of a prison.

软饮料行业靠不断革新而蓬勃发展。

模型检查的挑战不仅在于发现错误，还在于理解它们为何发生。

我总是在寻找那些挑战我并让我走出舒适区的角色。