青云翻译

Fifty students participated in the singing contest, their ages ranging from ten to eighteen

50 students participated in the singing contest, their ages ranging from ten to 18 years

50 students participated this time sang to compete, their age from ten years old to 18 years old different

50 students took part in this contest, and their ages ranged from 10 to 18 years old

50 students participated in the singing contest, their ages ranging from ten to 18 years