四维空间 sì wéi kōng jiān

DEFINITIONS

  1. four-dimensional space (math.)

CHARACTERS

四 sì
HSK 1
four
维 wéi
HSK 5
maintain, preserve, safeguard
空 kōng
HSK 3
empty, hollow, bare, deserted
间 jiān
HSK 2
midpoint, space; place, locality