最年轻的

例句：

1. 1. Thebaby is the youngest in his class.
   这个婴儿是班上最年幼的。
2. 2. She wasthe youngest member of the team.
   她是队伍中最年轻的成员。
3. 3. The youngest child in the familyis still learning to walk.
   家里最年幼的孩子还在学走路。