法律的概念涉及主要规则和次要规则的结合。
筹划洋人的事情一定要先了解洋人的情况,要了解洋人的情况一定知道洋人的情况。
The essence of cryptography is to allow communication in the presence of adversaries.
Enterprises must fulfill their social responsibilities, promoting environmental protection and sustainable development while ensuring energy supply.
成功的真正标准不在于收获,而在于我们留下的遗产。