操办丧事,虽然礼仪繁多,但表达哀悼之情,才是最根本的。
Cryptography is the art of transforming information into a form that is unintelligible to anyone who does not possess the key to unlock it.
我不缺乏把一个想法彻底思考下去的勇气,到目前为止,我还没有遇到过我害怕的想法。