Adiabatic means that there's no heat transferred between the system and the surrounding.

绝热是指没有热量,在系统和环境间传递。

麻省理工公开课 - 热力学与动力学课程节选

So the ephebes were those boys who were between the age of maybe 16 or 17 and 20 or 22.

所以Ephebe就是指,年纪在大约在十六七至二十二十二间的男子。

耶鲁公开课 - 新约课程节选