Underaging
时效不足
🗣️ 情景例句
My parents set aside a college savings fund for me.
我的父母为我存了一笔上学的费用。
Do you understand?
你明白了吗？
He's only forty-one years old, and he has already been to nearly every country in the world.
他只有41岁，但他却过世界上几乎每一个国家。