She is starting to become beautiful at "sweet16".21is the year you become an adult ,but now 18 is also important. At the age of 18 many young people in Britain and the United States can vote. Some people dong't like to celebrate their birthdays as they get older. They don;t want people to know how old they are.在16岁这花季般的年龄,她开始出落成了美人.到21岁你就成年了,可当下这18岁也非同小可.18岁时,英美的许多年轻人就有了选举权.有些人年纪越来越大了就不怎么爱过生日了,他们可不想让别人知道他们的年龄.