white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma
ephedrine的用法和樣例：
例句
用作名詞 (n.)
Optical rotation was used to determine the content of ephedrine hydrochloride. 採用旋光法測定鹽酸麻黃鹼含量。
Regulations on the control of ephedrine have steadily been improved. 逐步完善管制麻黃素的法規。
China is one of the major producing and exporting countries of natural ephedrine. 我國是天然麻黃素的主要生產國和出口國之一。
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