undiversified

Undiversified tobacco companies stand to lose if there were a mass migration to smokeless products like Snus.

果有大量的鼻烟这样的无烟烟流入，一成不变的烟公司将亏损。

Ophthalmology is a compulsory course of clinical medicine for medical college students.The undiversified traditional teaching method results in unsatisfactory teaching effects.

眼科学是高等医学院校学生的一门临床必修课,传统教学手段单一,教学效果不尽人意。