Singletons
(singleton 的复数) n. 一个, 独生子, 独身
🗣️ 情景例句
Well,
好，
My cousin is a member of a flying club, He seem private flying.
我的表兄是一个飞行俱乐部成员，他似乎很喜欢飞行。
Someone is ringing the bell.
有人在按门铃。