这通常采用键或标识符的形式，用于使消息进行相互关联。

This awareness usually takes the form of a key or identifier that can be used to correlate messages.

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为此，客户机以映射塔的形式提供数据，映射塔作为查询键。

To do this, data is provided by the client in the form of a map tower which serves as a lookup key.

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在标准bash形式中，您可以使用光标键来执行基本的移动。

In bash's standard form, you can use the cursor keys for basic movement.

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And then we end up having 6 shared electrons, 2 from each of the bonds, so we end up with a formal charge on sulfur of plus 1.

然后我们有六个共用电子，每个键两个，因此最终硫的形式电荷量为正一。

麻省理工公开课 - 化学原理课程节选

For the sulfur, we start off with 6 valence electrons, minus 4 lone pair electrons, minus 2, taking in account our bonding electrons, so we end up with a formal charge of 0.

对于硫，我们从六个价电子开始，减去四个孤对电子，再减去二，算上我们的成键电子，因此最终我们有零个形式电荷。

麻省理工公开课 - 化学原理课程节选

The other thing is that we can re-write our h c n in terms of bonds.

还有一件事是我们可以用键的形式来表示氰化氢。

麻省理工公开课 - 化学原理课程节选