Hexamethylamine
六甲铵
🗣️ 情景例句
Look,
看，
Perseverance is vital to success.
不屈不挠是成功之本。
A tramp may ask you for money, but he will never ask you to feel sorry for him.
游浪汉可能会向你讨钱，但他从来不要你可怜他。