1) They is in their teens.
他们都十几岁。
2) They are all age 20.
他们都是20岁。
3) more than ten years his junior
比他年轻十几岁
4) His son is in his teens.
他的儿子十几岁。
补充资料：他们
1.代词。称自己和对方以外的若干人。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条