若你只看到光的某一频率，你会感到恍惚，然后眼睛会努力适应这一体验，而在这一过程中，不同的色调就会产生。

When you see just one frequency of light, it is disturbing and the eye tries to accommodate itself to the experience and in the process, different tones appear that do not exist in the place.

youdao

跟上一代不同，电子护照除了包含照片及光感条码之外，还记有生物体征数据，植在无线电频率识别(RFID)芯片上。

Unlike previous ones, the e-passports contain biometric data embedded in a radio-frequency identification (RFID) chip, along with the usual mugshot and optical bar-code.

youdao

当这些能级中，发生电子跃迁时，这些电子便吸收并释放出不同特定频率的光。

When electrons jump between these energy levels, they absorb and emit light of particular frequencies.

youdao

So that's the important take-away message from this slide. If we think about these different types of lights, microwave light, if it's absorbed by a molecule, is a sufficient amount of frequency and energy to get those molecules to rotate. That, of course, generates heat, so that's how your microwaves work.

重要的信息，如果我们看看,这些不同种类的光，微波,如果被分子吸收，它的频率和能量可以,使分子转动,这当然的，会产生热量,这就是你们微波炉的工作原理。

麻省理工公开课 - 化学原理课程节选