alkynyl compound

例句：

1. 1. The alkynyls are a class of compounds that have double bonds between carbon atoms.
   炔基化合物是一类具有碳原子之间双键的化合物。
2. 2.Alkynyl compounds are used in the synthesis of many important chemicals.
   炔基化合物在合成许多重要化学物质中被使用。
3. 3.Alkynyl compounds are also known as alkynes, which is why they are often referred to as "unstable".
   炔基化合物也被称为炔，这就是为什么它们通常被称为“不稳定”的原因。