定义
joy: 快乐、欢乐 
            
            
joyful  快乐的、高兴的
- "In this friendly, friendly world, with each day so full of joy, why should any heart be lonely?"
 - "A ballad that inspires company pride and joy."
 - "Regarding a restaurant in Hong-Kong: if you want to try something different, I really enjoy "The Joyful Shrimp Palace", located downtown."
 - "Let's welcome our first, and thankfully penultimate, that means second to last, entry: "Boy Joy Machine?"
 - "Brian : Joy..."
 - "invite you to share in the joy of the marriage"
 - "I thank you in advance and wish your family great joy."
 - "As Luna points out, Christmas is a time of joy but also of needless consumeristic folly."
 

