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

Kentuck Knob is also down the road from Fallingwater, Frank Lloyd Wright's masterpiece, which is cantilevered over a waterfall.

FORBES: Un-private Houses

The race then began with a 60-foot rappel down a knob of rock sticking out into the Pacific Ocean.

FORBES: Pain is good

Somewhere near 53rd Street I remembered a saving grace: ECO mode, achieved by pushing and holding down the Drive knob in the center console.

FORBES: Car Wars: The Silent Nissan LEAF