Our bodies have a built-in survival mechanism to conserve calories when we go for a long period of time without eating.
当我们长时间不进食,我们身体有个内在的生存机制会保存热量。
Who can manage to do such hard work consistently for long period of time without strong motivation?
如果没有激励,谁能持续地把自己如此长的时间奉献给一项如此艰苦的工作?
PerSEAS is designed to observe multiple actions over a long period of time across a large geographic area to identify dangerous combinations and patterns of actions.
PerSEAS项目旨在横跨很大区域在相当长的时间内观察多个行为,以识别危险的行为组合和行动模式。