本节关注的是这样一个格式，qr码，因为针对这个格式已经有很多开源工具可用，而且阅读器也都可以在便携的电子设备(比如手机上)实现。

This section considers one such format, the QR code, for which open source tools are readily available and readers are commonly implemented on portable electronics such as cell phones.

youdao

而且我认为人们也会开始考虑，像电子的质量对质子的质量的比值，也许其他无量纲的常数也在发生变化。

And I think people would start looking to see, well, maybe other dimensionless ratios like the ratio of the mass of the electron to the mass of the proton are changing.

youdao

沃森也援引个人理由辞职，但是他与“报销门”有牵连，而且据说还涉嫌电子邮件诽谤政敌事件。

Mr Watson too named family reasons for going, but he was also embroiled in the expenses scandal and reportedly complicit in Brownite smear tactics.

youdao

And if we talk about electrons or photoelectrons, again we can describe it in terms of energy, we can talk about velocity, and from there, of course, you can figure out the energy from 1/2 m v squared, and actually we can also describe the electron in terms of wavelength.

如果我们谈论电子或者光电子，我们又可以从能量的角度来描述它，我们可讨论速率，从那里，当然，你可以计算1/2，m，v2得出能量值，而且事实上我们也可以,从波长的角度来描述电子。

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