基本解释adj.没头脑的；愚笨的同根派生 英汉例句用作形容词 (adj.)Meg was quite upset this afternoon. She was in no mood for their brainless gossip.麦格今天下午相当不安，她对他们不经大脑的闲扯没有心情。That was a pretty brainless thing to do.那样做很愚蠢。