人们制订各类法规标准,都是从社会整体的综合效益出发,随着时间的推移、社会的发展以及科学技术的进步,适时作出调整与修订,以适应新的时代需求。例如,对汽车废气有害物质含量的限值标准,就是不断趋向严格,以求在技术可能的条件下,尽量减少对人体健康的危害,减少对大气环境的破坏。 All sorts of statutory and regulatory standards are set out by the comprehensive benefits of society as a whole. With the passage of time, the development of society and the progress of science and technology, adjustments and revisions are made in a timely manner so as to meet the needs of the new era. For example, the limit value of the content of harmful substances in automobile exhaust is constantly stricter and strives to minimize the harm to human health and reduce the damage to the atmospheric environment under technically possible conditions.