非法开拍卖

【法】 closed auction

非法的英语翻译：

【法】 illegality; illegitmacy; unlawfulness

开的英语翻译：

unclose
【化】 carat
【医】 carat

拍卖的英语翻译：

auction; auctioneer; public sale; roup; sale; vendue
【经】 auction; auction sales; auctioneer; public sale; sale by auction
sell by auction