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- biosphere system evolving 生物圈系统进化
- Shining with light from the central star reflected by dust, the frigid Boomerang Nebula is believed to be a star or stellar system evolving toward the planetary nebula phase. 冰寒的回飞棒星云会发光，是因为它尘埃反射了来自中心星的星光，天文学家认为它是正在演化到行星状星云阶段的恒星或恒星系统。
- The thesis describe the procedure of the PLC control system evolving into Advanced Control System Based on the fieldbus,and analysis the construction of the system and its potential market. 本文描述了PLC控制系统向基于现场总线先进控制系统的演变过程，分析了系统结构组成及市场前景。
- The practices and institutions that constitute an economic system evolve over time, as those put in place to resolve certain problems create new ones. 构成经济系统的惯例与制度随时间变迁而不断演化，它们在解决现有问题的过程中创造出新的惯例与制度。
- Discipline is the unity of knowledge and power.Musicology system evolvement analysis from Disciplinary vision belongs to the study of meta-theory. 摘要学科是知识与权力的统一，学科视界下的音乐学体系分析属于元理论研究。
- The engagement system evolves the development unceasingly until today, appeared the new appearance, also has initiated the new question. 婚约制度不断演变发展直至今天，出现了新的面目，也引发了新的问题。
- How did the political system evolve to accommodate frequently changing, and often radically divergent, definitions of national strength and modernity? 政治体系要如何运作以适应面对经常变化与激烈分歧的国家实力与现代性的定义？
- During the Han dynasty, the general system including the militarization of prefectural government had experienced many changes, promoting political system evolvement. 摘要两汉时期将军制度发生了诸多变化，这与州府的军府化过程可谓-在中央层面-在地方层面，共同推动着两汉政治体制的演化。
- Each probability in the state transition matrix and in the confusion matrix is time independent - that is, the matrices do not change in time as the system evolves. 在状态转移矩阵以及混合矩阵中的每一个概率都是与时间无关的，也就是这些矩阵在系统演化的时候并不随着时间而改变。
- Our galaxy is a continuously evolving system. 我们的星系是一个不断演化的星系。
- I suppose you also have a caste system in your society. 我想你们的社会里也有一种等级制度。
- The right to dissent is part of our political system. 有持异议的权利是我们政治体制的组成部分。
- Do you know how to log in to the system? 你知道怎么登录进入这个系统吗？
- Public opinion was against the old feudal system. 公众舆论反对旧的封建制度。
- The system works on the principle that heat rises. 该项装置是按照热力上升的原理运转的。
- Monitoring the sky for these objects helps scientists to gain insight into how binary systems evolve. 对太空中这些物体的观察有助于科学家洞察双于星系统的演化。
- The drainage system has been aged. 排水系统已经老化了。
- They called for a radical reform of our tax system. 他们要求对税收制度进行根本改革。
- This is a highly efficient new heating system. 这是个高效的新取暖系统。
- He's mute on the subject of social system. 他对社会制度的问题保持沉默。
