So essentially, everything that is created goes through a series of life cycle stages, and we use this scientific process called life cycle assessment, or in America, you guys say life cycle analysis, in order to have a clearer picture of how everything that we do in the technical part of those systems affects the natural environment.
从根本上说，一切事物 都经历一系列的生命周期阶段 我们用这一科学过程 即生命周期评价 或在美国，你们称为生命周期分析 来更清楚了解 我们在这些系统的技术性部分所做的一切 如何影响自然环境。