1. singleton
其它相關解釋:
<only child> <only son>
例句與用法:
1. 他是獨生子, 是父母的寵兒.
As an only child he was the idol of his parents.
2. 獨生子女有時被寵壞了.
Only children are sometimes spoilt.
3. 過分溺愛獨生子女的父母
Parents who dote on their only child.
4. 那筆錢留給了獨生子。
The money fell to the only son.