amide

例句：

1. 1. The amide bond is formed when two molecules of a compound combine to form a single molecule.
   酰胺键是在两种化合物的分子结合形成单一分子时形成的。
2. 2. The amide group in the chemical formula represents the nitrogen-containing functional group.
   化学公式中的酰胺基团代表含氮功能团。
3. 3. Amides are used as building blocks for many synthetic compounds.
   酰胺作为许多合成化合物的构建块。