游戏规则服务于作为主体的这些工具，但是工具并不取决于游戏。
The rules of the game are subject to those of the tool, but the tool does not depend on the game.
第2步：使用主体的e - mail ID作为主体的唯一标识符。
Step 2: Use the E-mail id of the subject as a unique subject identifier.
要促进教师研究意义的构建，必须关注教师真实的生活，关注教师作为主体的存在。
Therefore, we must pay attention to teachers' real living and existence as subject to advance meaning construction of teachers' research.
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