black hole
cave
Schwarzes Loch
Loch
buco nero
foro
trou noir
trou
agujero negro
agujero
black hole 7 黑洞 [-] hēidòng (black-hole) black hole: ~理论black hole theory '
cave 68 洞 [-] dòng (grotto) cave: 山~ mountain cave || 树~ hole in a tree || 挖~ dig a hole '