基本解释adj.空虚的；空的；木然的词源解说 直接源自古法语的vacant，意为未占用的；最初源自拉丁语的vacantem，意为空着的。同根派生vacancy n. 空房间; 空虚; 空白英汉例句用作形容词 (adj.)用作定语: ～+ n.There were many vacant seats in the theater.剧院里有许多空座位。用作表语: S+be+～Is the lavatory vacant?厕所里没人吧?