说起来容易，做起来难

easier said than done

• cod liver oil
• codpiece
• cod wars
• cody，william frederick
• cod，cape
• coeducation
• coefficient
• coefficient of friction
• coelanaglyphic
• coelenterate
• coeliac disease
• coelom
• coenzyme
• coen，jan pieterszoon
• co-equal
• coerce
• coersion
• coeur de lion:
• coeur，jacques
• coe，sebastian
• coffee
• coffer
• cofferdam
• coffin
• coffin，henry sloane