打电话给他——这是个紧急情况。

Call him - it's an ___emergency.

残疾人在紧急情况下如何逃生？

How would disabled people escape in an ___emergency?

飞机飞行员被迫在日内瓦湖上进行紧急着陆。

The pilot of the aircraft was forced to make an ___emergency landing on Lake Geneva.