基本解释adj.腐烂变质的；谬误的；无根据的；靠不住的同根派生 英汉例句用作形容词 (adj.)In theory as well as in practice, the idea is unsound.这个主意在理论上和实践上都站不住脚。Do not listen to unsound advice.别去听无根据的劝告。I am afraid that it is an unsound investment.我担心这项投资靠不住。