天文数字 Traditional 天文數字 tiān wén shù zì 🔊 astronomical figure + Keep this word Meanings tiān wén shù zì 天文數字 (idiom) astronomical figure Its characters 天tiāndayHSK 1文wénlanguageHSK 7–9数shǔto countHSK 4字zìcharacter; wordHSK 1