The problem is that if the decision is reached rapidly, as it might have to be in an emergency, then relatively few scouts know the route.

问题在于如果决策过快，比如在紧急情况下，知道路线的侦查蚁就会相对过少。

youdao

This door should only be used in an emergency.

这道门只能在紧急情况下使用。

《牛津词典》

WFP officials say existing food stocks in the area are exhausted and an emergency effort will be launched to bring wheat and potatoes into the area.

世界粮食计划署官员说，该地区现有的粮食储备已经耗尽，将启动紧急行动把小麦和土豆运到该地区。

youdao

The new capsule could also be used if astronauts need to leave the station in an emergency.

VOA: special.2010.04.28

Moreover, you might get hit by an illness and then you could be in desperate trouble that you will die unless you get some kind of emergency care, which might be very expensive.

还有，你可能染上重病,并且深陷绝境,以致你会因此而死去,除非你能获得异常昂贵的，紧急护理。

耶鲁公开课 - 金融市场课程节选

He was asked to think of a word that could be used in an emergency.

VOA: special.2010.04.18

Unofficially referred to as "Sub-Zero, " the facility will store a copy of the social network's data in case its primary servers need to be restored in an emergency.

ENGADGET: Facebook to backup its servers with low-power storage devices at 'Sub-Zero' data center

"I thought if I could fill in information on North Korea, it might be useful in an emergency or a tragedy if Google can provide a map for aid agencies, " Mr. Hwang said.

WSJ: Google Maps Details Streets, Prison Camps in North Korea

Cirrus aircraft already come equipped with a full-airframe parachute that can be deployed in an emergency, and the system has been credited with saving dozens of lives.

FORBES: Will Your Next Airplane Be A Drone?