So, you picked up some speed, then you're coasting along at a steady speed.

所以当你加到一定速度,然后你便匀速上升的时候

耶鲁公开课 - 基础物理课程节选

And the experimenter is back there with the speed knob and at random intervals he just speeds up the tape of their heart and then slows it down.

实验者回到实验室，带着录音设备,随机地,他加速了心跳的录音,然后又慢下来。

耶鲁公开课 - 心理学导论课程节选