Lucy is 14 years old.Daming is 11 years old.(何必为一句）

Lucy is 14 years old while Daming is 11 years old.
或者
Lucy is 14 years old, 3 years older than Daming.
再问： Lucy is 14 years old. Daming is 11 years old.(何必为一句 Lucy ( ) ( ) ( )than Daming
再答： 应该是四个空吧？或者你在Lucy后面漏掉了is? Lucy is three years older than Daming.