synthesis ammonia

例句：

1. 1. The scientists have successfully synthesized a new drug.
   科学家们已经成功地合成了一种新药物。
2. 2. The process of synthesis involves the combination of two or more substances.
   合成过程涉及两种或多种物质的结合。
3. 3. The synthesis of this compound is crucial for its applications in industry.
   这种化合物的合成对于其在工业中的应用至关重要。