这样吧，每天只允许自己检查一次电子邮件，每次30分钟。

Only allow yourself to do email once a day, for 30 minutes.

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这些物品在失踪的空客发出最后一次电子信号的地点附近发现。

The discoveries were made in an area that is not far from where the last electronic signal was received from the missing airbus.

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当我们用“快易通”完成一次电子付费，我们交易的记录有一天就可能被用于离婚案。

When we go through an electronic toll with our E-Zpass, a record of our movements exists that might one day be used in a divorce case.

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So whether we finish it today, or more likely when we finish it up on Friday, once we get passed isoelectronic atoms, that's it, that's all you need to study for this first exam.

因此，我们也许今天讲完，或者更有可能周五讲完，无论如何，就到我们讲完等电子原子为止，这是你们第一次考试所需要准备的全部内容。

麻省理工公开课 - 化学原理课程节选

Again we have the charge of the nucleus on plus 2, +2 but let's say this time the electron now is going to be very, very close to the nucleus.

对于我们的氦原子，我们有一次得到了原子核电荷量为,但是我们说这次电子。

麻省理工公开课 - 化学原理课程节选

Let's move on to the last topic in terms of this first exam, which is thinking about the idea of isoelectronic atoms, or isoelectronic ions. And isoelectronic is very straightforward, it just means having the same electron configuration.

下面我们继续讲第一次考试的最后一个主题，也就是等电子原子，或等电子离子的概念，“等电子的“是非常直接的表达，它的意思就是具有相同电子排布的。

麻省理工公开课 - 化学原理课程节选