1. The young nation is faced with many difficulties.
那个新建立的国家面临许多困难。
2. My sister is too young to go to school.
我妹妹还未到上学年龄。
3. He is old in age yet young in spirit.
他虽年老，但朝气蓬勃。
4.Generally speaking, the young are less conservative than the old.
一般而言，年轻人比老年人较不保守。
5. Animals protect their young.
动物保护它们的幼崽。
