黑洞洞

suì dào li hēi dòng dòng de shēn shǒu bù jiàn wǔ zhǐ

隧道里黑洞洞的，伸手不见五指。

It's so dark in the tunnel that you cannot see your hand in front of you.

jǐng hěn shēn ér qiě hēi dòng dòng de

井很深，而且黑洞洞的。

The well is deep and pitch-dark.

tā men yī qǐ pá shang hēi dòng dòng de lóu tī

他们一起爬上黑洞洞的楼梯。

Together they climbed the dark stairs.

chú fáng xiàn zài hēi dòng dòng de jiǎo luò li yǒu zhī pò jiù de lú zi

厨房现在黑洞洞的，角落里有只破旧的炉子。

The kitchen now is a dark cavern, with an antiquated stove in a corner.