It's metaphorical. So, 'slap' here means to put a label on to the junk food quickly and urgently.

这是隐喻性含义。所以，“slap”这里的意思是迅速而紧急地给垃圾食品贴上标签。

That's a big enough problem to cause states of emergency in places like West Virginia, Kentucky and Texas.

西弗吉尼亚州、肯塔基州和得克萨斯州等地造成紧急状是个大问题。

The results of the testing will help school officials prepare better for emergencies.

测试结果将帮助学校官地应对紧急情况。

If there's an emergency in the colony, Earth wouldn't be able to help until the next travel window opens.

如果移民地发生紧急情况，下一个旅行窗口来临时，地球都无法提供帮助。

My position isn't as crucial as hospital staff who have to face the virus itself or the first responders who report to emergency situations without a second thought.

我的职位并不像必须面对病毒本身的医院工作人或不假思索地报告紧急情况的急救人那么重要。