立马

héng dāo lì mǎ

横刀立马

pull up the horse with a sword

tā yī tīng dào zhè ge xiāo xi lì mǎ biàn liǎn

他一听到这个消息，立马变脸。

As soon as he heard the news, his face darkened.

shì qing dǎ ting qīng chu le lì mǎ gěi wǒ huí huà

事情打听清楚了，立马给我回话。

Give me a call immediately after you get a clear picture of the matter.

wǒ lì mǎ gěi tā dǎ le diàn huà

我立马给他打了电话。

I soon got on the blower to him.