Methanal
n. 〈化〉甲醛
🗣️ 情景例句
I want to send this letter to China, by air mail.
我想把这封信航空邮到中国。
One father is more than a hundred schoolmasters.
一个父亲胜于一百个教师。
He was never seen again.
后来再也见不到这个人了。