宝库寶庫 bǎo kù — treasure-house
bǎo (third tone, dipping) kù (fourth tone, falling)bao3 ku4
Traditional: 寶庫
treasure-house
Levels 7–9· 2021 three-band, nine-level proficiency standardnoun
Meanings
treasure-house
treasure-house; treasury; treasure-trove (often fig., book of treasured wisdom)
noun