ectosexine

例句：

1. 1. The chemical reaction between ectosexine and water produces a gas.
   乙缩醛与水之间的化学反应产生气体。
2. 2. Ectosexine is used as a solvent in the production of plastics.
   乙缩醛用作塑料生产的溶剂。
3. 3. In the laboratory, ectosexine is often used to test for the presence of oxygen in air samples.
   在实验室中，乙缩醛常用于测试空气中氧气的存在。