Aldotetrose
丁醛糖
🗣️ 情景例句
Is it true that it's full of wonders there?
那里充满了奇异的景观，是真的吗？
Early mistakes are the seeds of future trouble.
早期的错误可以酿成日后的麻烦。
You are John Smith, the engineer,aren't you?
你是工程师约翰。史密斯，对吗？