| English | Chinese |
| concept of environment The development at any level of a general notion of the surrounding ecosystem, its foundational relationship to human life and the need to preserve its integrity | 环境观 (在一般概念层次上的环境生态系统的任何阶段，以及其与人类生命的基本关系和保持其完整性需求方面的发展。) |
| concept safety evaluation | 概念安全评价 |
| indefinite legal concept A condition or extent of time in a government enforced contract, instrument or agreement that lacks precision, distinguishing characteristics or fixed boundaries | 不确定法律概念 (政府强制执行缺乏精确度、可区别特征或固定边界的契约、手段或协定的一种状态或时间范围。) |
