They are archaeology, linguistics and ethnography.

分别是考古学、语言学和民族志。

Based on ethnographies, anthropologists can provide explanations of the behavior of different people.

基于民族志，人类学家可以解释不同人群的行为。

And ethnography can also help companies to design new products or services that customers really want.

且人种学还能够帮助公司设计出客户真正想要的新产品或者服务。

Well, businesses are finding that ethnography can offer them deeper insight into the possible needs of customers either present or future as well as providing valuable information about their attitudes towards existing products.

企业逐渐发现，学习人种学能够使他层次地洞悉现有或未来客户的潜在需求，同时也使他获取了客户对他现有产品的宝贵意见。

Two of its branches are ethnography (the study at first hand of individual living cultures) and ethnology (which sets out to compare cultures using ethnographic evidence to derive general principles about human society).

的两个分支是人类学(即个人生活文化的第一手研究)和人种学(通过人种学的证据来比较不同的文化，从得出关于人类社会的一般原则)。