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。

制药行业有道义上的责任，把患者放在利润之前。

这一种爱可以是唇舌无能为力，辩才失去效用。

After disasters, people lose not only their homes but their communities. Temporary housing should help rebuild both.

"The more we learn, the more we realize how much we don't know."

释义：不热衷打听他人的是非，不刻意关注别人的缺点，不传播他人的过错。