你们需要记住，什么是线积分，什么是场的散度？

So, you should remember, what is this line integral, and what's the divergence of a field?

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如清单10所示，您可以使用一种类似的模式来提取某个特定用户的用户时间线，然后试着在散列表中解码tweet的源代码。

As shown in Listing 10, you use a similar pattern to extract the user timeline for a given user, and then attempt to decode the source of the tweet in a hash.

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杂散电流泄露通常是配线系统破损或者磨损的结果，或者是由电线电气设备安装不当造成的。

Stray current leakage is usually a result of damage or wear to the wiring system or poor installation of wiring or electrical equipment.

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