If you describe something or someone as undesirable, you think they will have harmful effects.
例句
Inflation is considered to be undesirable because of its adverse effects on income distribution...通貨膨脹被認(rèn)為是有害的，因?yàn)樗鼤?huì)對(duì)收入分配產(chǎn)生不利影響。A large group of undesirable strangers crashed her party.一大群不受歡迎的陌生人不請(qǐng)自來，攪了她的聚會(huì)。
N-COUNT
不受歡迎的人；不良分子；危險(xiǎn)人物
Undesirables are people who a particular government considers to be dangerous or a threat to society, and therefore wants to get rid of.
例句
The Home Office is usually quick to deport undesirables.內(nèi)政部通常會(huì)迅速地將不受歡迎人士驅(qū)逐出境。