I dialed her number but got a busy signal.

我给她拨了电话，但占线。

youdao

You can signal whether you are out, busy, reachable elsewhere or free—and all your colleagues can see.

你能表示是否外出，忙碌，身居别处却可联系或是空闲，而且所有的朋友都能看到。

youdao

Most corporations, on the other hand, only know how to talk in the soothing, humorless monotone of the mission statement, marketing brochure, and your-call-is-important-to-us busy signal.

另一方面，大部分企业，只知道如何以安抚的、一本正经的单调方式来与人交谈，他们只有目标宣言、营销小册子，以及“你的来电对我们很重要”之类的托辞。

youdao

The more successful providers are, the more they must spend on equipment to make sure their growing number of subscribers can reach the Web without getting a busy signal.

CNN: Giving It All Away

Mobilcom, which charges a flat rate of DM0.19 a minute for long-distance calls in Germany (a third of Deutsche Telekom's peak rate), is so popular that most customers trying to reach its network find only a busy signal.

ECONOMIST: Deutsche Telekom

And if you just did one thing this hurricane season, make sure you've got a good family communication plan and what your backups are going to be, so when you get on that cell phone and you get that busy signal you're not stuck, you know what the next step is.

WHITEHOUSE: Press Briefing