norephedrine

例句：

1. 1.The doctor prescribed a medication to help himrecover from his illness.
   医生开了一种药来帮助他从疾病中恢复。
2. 2. The patientwas given an injection of norephedrine to relieve his symptoms.
   病人被注射了去甲肾上腺素以缓解他的症状。
3. 3. Norephedrine isa drug that can be used to treathigh blood pressure.
   去甲肾上腺素是一种可以用来治疗高血压的药物。