搜索

sōu suǒ to search (a place); to search (a database etc)

技术

jì shù technology; technique; skill; CL:門|门[men2],種|种[zhong3],項|项[xiang4]

主要

zhǔ yào main; principal; major; primary

分为

fēn wéi to divide sth into (parts); to subdivide

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