(1)
双重的；双层的；双的

(2)
两倍的；两次的

(3)
两方面的；双关的 v.

(4)
加倍；变成两倍

(5)
使加倍；使大一倍

• clausum
• clausum fregit
• clausum paschiae
• clausura
• clausura heyae
• claves insulae
• clavia
• clavigeratus
• clawa
• clayme
• Clay's Act
• Clayton Act
• Clayton-Bulwer Treaty
• clean
• Clean Air Acts
• clean bill
• clean bill of health
• clean bill of lading
• clean draft
• clean hands
• clean-hands doctrine
• clean paper
• Clean Water Acts
• clear
• clearance