thionyl

例句：

1. 1. This compound is used in the synthesis of thiocarbonyl compounds.
   这种化合物用于合成硫代羰基化合物。
2. 2.The reaction between sulfur and oxygen produces sulfur trioxide.
   硫和氧的反应产生三氧化硫。
3. 3. Thiocarbonyl compounds are important intermediates in the production of organic chemicals.
   硫代羰基化合物是有机化学品生产中的重要中间体。