time-server
noun [ C ] UK disapproving uk/ˈtaɪmˌsɜː.vər/ us/ˈtaɪmˌsɝː.vɚ/
得过且过的人，当一天和尚撞一天钟的人
a person who does not work very hard at their job, and who is just waiting until they reach the age at which they can stop work
曲意逢迎的人;趋炎附势的人
someone who changes their ideas and opinions in order to make them more like those that are held by people in power, especially because they believe it will be to their advantage