When a brief pulse of electricity is sent to the read/write head it flips on a tiny electromagnet for a fraction of a second.

当一个简单的电脉冲被送到读写头,它会短时间内出现一个小的电磁。

哈佛公开课 - 计算机科学课程节选

Bankers play golf a lot because business people like to play golf and you have to keep your finger on the pulse of the community.

银行家经常打高尔夫球,这是因为商企人士喜欢打高尔夫,而银行家需要时刻把握周边的经济脉搏

耶鲁公开课 - 金融市场课程节选

You see a bleep going across the screen to indicate that they've got their finger on the pulse of what's happening, or you see it in TV shows like ER.

你们看到一个亮点在屏幕上来回跳动,来显示病人脉搏的,跳动情况,就像在急诊室的故事,这类电视中看到的那样

耶鲁公开课 - 生物医学工程探索课程节选