Take a broad view of the world the legal profession in various countries are struggling to find a well-established of fair use criterion in order to better guide practice activities and safeguard social fairness and justice .

放眼世界，各国的 法律人士都在努力寻找一套行之有效的合理使用判断标准， 以更好的指导实践活动，维护社会的公平与正义。

Internet has brought us into a new virtual world but it also posed a severe challenge to the real-world legal order at the same time .

因特网在给我们带来虚拟 世界的同时，也向现实世界的 法律 秩序提出了严峻的挑战。

For now the world advanced developed countries have established a sophisticated legal system of government procurement to regulate their government purchasing behavior in order to give better play to the functions of government at economic management .

目前 世界 上先进发达国家都建立了比较完善的政府采购 法律制度来规范本国的政府采购行为， 以便更好的发挥政府的经济管理职能。