P.-p. substance
[医] 糙皮病预防物质
🧩 词语组成解析
🗣️ 情景例句
We tested it last week on twelve- to fifteen-year-olds,
我们上一周曾在十二岁至十五岁的孩子中试过这项游戏，
An idle youth, a needy age.
少壮不努力，老大徒伤悲。
But I think the ones with nuts in them are nicer.
但我认为有果仁的那些更好。