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第五步：立刻采取行动。

Step 5: Jump into Action immediately.

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第五步：致电戒烟热线

Step 5: Call stop smoking line

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So, step five tells us to add 2 electrons between each atom, so we add two there.

那么，第五步告诉我们在两个原子之间放上两个电子，因此我们在这放上两个。

麻省理工公开课 - 化学原理课程节选

Because step five is that we need to fill in our bonding electrons, and we start it with filling in two electrons per bond.

因为第五步要做的是将我们的成键电子填在这，所以我们开始在每个键处填上两个电子。

麻省理工公开课 - 化学原理课程节选

And that was step five.

这就是第五步。

麻省理工公开课 - 化学原理课程节选