Singletons
(singleton 的复数) n. 一个, 独生子, 独身
🗣️ 情景例句
It's tough getting an O.K. from the boss.
很难从老板那听到声“同意”。
Fortune favours the bold.
勇者天佑。
Beware of methylated alcohol, which is very poisonous,
要提防甲基化酒精，那是剧毒的，