兴奋药

例句：

1. 1. The athlete took the drug to increase his performance.
   这位运动员服用了这种药物以提高他的表现。
2. 2. The doctor prescribed the medication for her condition.
   医生给她开了这种药物来治疗她的状况。
3. 3. The use of stimulants is illegal in many countries.
   在许多国家，使用兴奋剂是非法的。