They are archaeology, linguistics and ethnography.

它们分别、语言和民族志。

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

基于民族志，人类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.

且人种还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，习人种使他们更深层次地洞悉现有或未来客户的潜在需求，同时也使他们获取了客户对他们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).

它的两个分支人类(即个人生活文化的第一手研究)和人种(它通过人种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)。