Examples
jǐn jí紧急qíng kuàng情况xià下，nín您kě yǐ可以lián xì联系wǒ我。
紧急情况下，您可以联系我。
If there's anything urgent, you can get in touch with me.
这件事非常紧急。
This matter is very urgent.
有紧急情况时，必须通过这个出口跑出房子。
If there's an emergency, you must run out of the house through this exit.