lactucin的翻译，读音
英/læk'tju:sin/
释义：
莴苣苦素
n. A white, crystalline substance, having a bitter taste and
a neutral reaction, and forming one of the essential ingredients of
lactucarium.
n. A white, crystalline substance, having a bitter taste and
a neutral reaction, and forming one of the essential ingredients of
lactucarium.