he is a thirteen-year-old boy who loves traveling.
他是一个喜欢旅游的十三岁的小男孩。
a thirteen-year-old boy was sitting on the sofa watching tv when the telephone rang.
一位十三岁的小男孩正坐在沙发上看电视,突然电话铃响了起来。
he is a thirteen-year-old boy who loves travelling.
他是一个十三岁的男孩,他喜欢旅游。
a thirteen-year-old boy was sitting on the sofa watching tv when the phone rang.
一个13岁的男孩正坐在沙发上看电视,这时电话响了。