aldehydes

n.any of a class of highly reactive chemical compounds; used in making resins and dyes and organic acids

1. Formaldehyde is one of the simplest aldehydes and is commonly used in disinfectants.
   甲醛是最简单的醛类之一，常用于消毒剂中。
2. Aldehydes can be found in many fruits, contributing to their aroma.
   醛类可以在许多水果中找到，增添它们的香气。