lacto-vegetarianism       
noun [ U ] uk/ˌlæk.təʊ.vedʒ.ɪˈteə.ri.ə.nɪ.zəm/ us/ˌlæk.toʊ.vedʒ.əˈter.i.ə.nɪ.zəm/
 乳类素食主义
the practice of not eating meat, fish, or eggs but drinking milk and eating some foods made from milk
  Lacto-vegetarianism includes dairy products but not eggs. 乳类素食主义包括乳制品,但不包括鸡蛋。 
 The earliest records of lacto-vegetarianism come from ancient India and ancient Greece in the 6th century. 最早的乳类素食主义的记录来自6世纪的古印度和古希腊。 
 - More examples
 - Lacto-vegetarianism is a popular nutritional system nowadays.
 - If you’ve opted for lacto-vegetarianism, you have a wide array of foods to choose from.
 - In India, vegetarianism itself is defined as lacto-vegetarianism, since eggs are considered to be a non-vegetarian food.