擦黑儿

gǎn dào yī yuàn shí tiān yǐ jīng cā hēi r le

赶到医院时，天已经擦黑儿了。

We did not get hospital until sunset.

tā cā hēi r cái huí dào jiā

他擦黑儿才回到家。

He didn't come home until dusk.