如果你对动物和自然感兴趣，来加入我们吧！青年探险家为你准备了一个为期三天的项目！你可以参加许多活动，遇见狮子、猴子、老虎等动物！

If you ate interested in animals and nature, come and join us! Youth explorer has prepared you with a three-day program! You can take part in many activities and meet animals, lions, monkeys, tigers and so on!

youdao

最后，如果有时间的话，我们将再介绍最后一个主题：，等电子原子与离子。

And then, if we have time at the end, we'll introduce one last topic, which is isoelectronic atoms and ions.

youdao

如果你不能等，在我们的互助论坛中已经有很多关于删除网址和个案问题解答的文章。

If you can't wait, much has already been written about URL removals, and troubleshooting individual cases, in our Help Forum.

youdao

And then, if we have time at the end, we'll introduce one last topic, which is isoelectronic atoms and ions.

最后，如果有时间的话，我们将再介绍最后一个主题：,等电子原子与离子。

麻省理工公开课 - 化学原理课程节选

So, we can say that -- if we have neon here and we want to think about what's isoelectronic, -- f minus would be isoelectronic. We also have oxygen -- what would the charge on oxygen be? Um-hmm, right. 2 minus.

那么，我们可以说--如果我们这里有氖原子,而我们想知道与它等电子的是什么，负一价的氟离子就是与它等电子的，我们还有氧-,氧应该是几价的？没错，负二价。

麻省理工公开课 - 化学原理课程节选