Medical aid must be sent to the stricken area posthaste.

灾区需用医药，急如星火。

Please send your answer to me posthaste.

请尽快回信答复我。

Please come and help me posthaste, I really need you.

请尽快来帮我，我非常需要你。

Life is too short, the way it is, can not posthaste.?

人生太短暂了，事情是这样的多，能不兼程而进吗？

Note: Anyone who received a signing bonus will be required to return it, posthaste, with interest.

注意：任何收到年度花红的人要火速退回花红包括利息。

As Zhou Yu and Shi Hou set out for Chen, Shi Que sent a letter posthaste to the king of Chen, in which he told him: "The State of Wei has fallen into the hands of two evil men."

其实石碏早已写好一封信，差人暗地送给陈王，信里说：“卫国不幸，出了两个大逆不道的贼子。