黑洞洞

hēidòngdòng

黑洞洞 — hēidòngdòng

1. pitch-dark; completely dark

   屋里黑洞洞的，看不见东西。 wūlǐ hēidòngdòng de kànbújiàn dōngxī — The room was pitch-dark; you couldn't see anything.