Other products warn drivers if they are falling asleep or in danger of an accident.

VOA: special.2010.01.08

They just wait, they wait for their time, they wait until you are in danger from a particular antigen.

它们时刻准备着,在等待着那一刻,等待你被某种特别的抗原威胁的时刻

耶鲁公开课 - 生物医学工程探索课程节选

They just wait, they wait for their time, they wait until you are in danger from a particular antigen.

它们时刻准备着,在等待着那一刻,等待你被某种特别的抗原威胁的时刻

耶鲁公开课 - 生物医学工程探索课程节选