It is a temporal relation between the event time and the speech time or another reference time, and can be obtained by time phrase parsing of Chinese text.
时制是时间信息的重要组成部分，需要在篇章中通过时间短语的语义分析获得。
In this paper, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
对影响导航定位系统定位精度的各种因素进行了分析。研究了影响导航定位精度的关键技术问题，如时间基准、时间同步和卫星定轨等。
In this paper, we analyze the key techniques for the service precision of Global Navigation satellite System such as time reference, time synchronization, satellite orbit determination, etc.
研究了影响导航定位精度的关键技术问题，如时间基准、时间同步和卫星定轨等。
Because of the lack of reference, time for a long time employees tend to form complacency, leading to slack.
因为缺乏参照物，时间久了员工容易形成自满情绪，导致工作懈怠。
Because of the lack of reference, time for a long time employees tend to form complacency, leading to slack.
因为缺乏参照物，时间久了员工容易形成自满情绪，导致工作懈怠。
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