这种自由常常被生活的复杂所束缚，譬如经济需求，时间制约，以及财产所有物的大包小包等等。
And such freedom is hindered by complexities like financial demands, time constraints, and the baggage of material belongings.
2006年环境署就发布了汞和碳氢化合物的标准，但是这些标准仅适用于2005年12月2日以后修建的水泥窑，因此就造成当时大多数正在运行的水泥窑并不受该标准的制约。
The agency issued standards for mercury and hydrocarbons in 2006. But they applied only to kilns built after Dec. 2, 2005, so most kilns then operating were exempt.
FRP复合材料结构加固是当今最引人关注的结构加固热点技术，它可以减少传统的结构加固施工工艺所受的制约，加快结构物改造利用技术的推广。
Compared with the traditional strengthening techniques, structural retrofit and rehabilitation with FRP is a very hot one which can reduce the restrictions, and expedite its popularization.
应用推荐