When the airlines decided to enforce these rules without giving anyone a heads-up, it created a lot of problems for travellers.

航空公司在决定执行这些规定时没有事先通知任何人，这给旅客带来了很多麻烦。

Would it be cool to email a heads-up to everyone in my address book?

将消息用电子邮件告诉地址簿里的每一个人，这是多么的酷啊！

It's beyond the laws of physics, plus a little heads-up for the ladies.

超出了物理学定律另外也是对女性朋友的小提醒。

If we have to put our contingency plan into effect, we may want to give her a heads-up.

如果我们不得不施行应急计划，我们可能要给她个提前说明。

It also lets you set up an alert system, so if H1N1 arrives in your area, you'll get a heads-up.

这种应用程序还可以设置报警系统，因此，如果H1N1出现在用户附近区域，用户能立即获得警报。