closed/kləʊzd/

adj

1. 关闭的；封闭的

• The shop is closed on Wednesday. 这家商店星期三不开门。

• a closed window 关着的窗户

2. 闭合的

• a closed cooling system 闭式冷却系统

3. 僵死的；封闭的；排外的

• He has a closed mind. 他思想封闭。

• a closed economy 闭关自守的经济

词组closed book 不了解的事，不理解的事

• Philosophy is a closed book to me. 我对哲学一窍不通。