理学 意识心理 释 activity 活动 具有明确目的并完成一定社会职能的各种动作的总和。
activity 活动 moving 滑动，活动，移动；滑动的，活动的，移动的
计算机应用 信息系统与信息化 释文 activity 活动
- book order number
- book overstock
- book ownership seal
- book poster
- book pre-sale
- book price
- book printing
- book printing in Lin'an
- book printing in Sichuan
- book printing in the Jurchen Jin Dynasty
- book production-sale form
- book publishing in Sibao
- book purchase
- book purchase and selling
- Book Quality Guarantee System
- book recommendation
- book rental industry in ancient China
- book retail
- book return rate
- book review
- book reviewer
- book review journal
- book review science
- book sales cycle
- book sales exhibition