To draw a guard on a sequence diagram in UML 1.x, you placed the guard element above the message line being guarded and in front of the message name.

UML 1 . x中，为了在一个序列图上画一个约束，你把约束元件放在约束的消息线上，消息名字之前。

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For example, in our applications, the standard error message will be displayed in the message line, just above the function key line in the lower part of screen.

例如，在我们的应用程序中，标准错误信息将显示在消息行中，正好在屏幕下部的功能键显示区之上。

youdao

In August, when she first realized she had a problem, she posted a message on a Yahoo Internet addiction group with the subject line: I have an Internet Addiction.

今年8月，当她第一次意识到自己有问题了的时候，她在雅虎的一个网瘾小组上贴出了一条信息，标题是：我有网瘾。

youdao

"It's very important that the message not be that we have raised the base line for spending.

VOA: standard.2009.03.10

So generally, if you don't get an error message in a command line environment like this, that's good.

一般来说，如果你在命令行界面,没有收到错误信息，那就是好消息。

哈佛公开课 - 计算机科学课程节选

But as I said, the bottom line message is that we feel the pain that all Americans feel on the price of gasoline today.

WHITEHOUSE: Press Briefing

When I called one of the researchers, Ells Dutton from the National Oceanic and Atmospheric Administration (Noaa), he described the top line message as "relatively mild".

BBC: More sulphur trails from the stratosphere

The top line message is that the increase in concentrations over the "noughties" has partially masked temperature rise - similar to the conclusion of the research released two weeks ago, but using a radically different line of inquiry.

BBC: More sulphur trails from the stratosphere