这句英文怎么翻译更好? “retroactivity. the provisions of this standard reflect a consensus of what is necessary to provide an acceptable degree of protection from the hazards addressed in this standard at the time the standard was issued.” “追溯性: 本标准的规定反映了标准发布时提出采取必要措施达到一定防范危险程度的一致意见。”查看更多