Singletons
(singleton 的复数) n. 一个, 独生子, 独身
🗣️ 情景例句
All packed and ready.
都打包好了。
He is in difficulty in his business.
他在事业上遇到困难了。
Most cats remain suspicious of humans all their lives.
在它们的一生中，大多数猫都对人存有戒心。