时间胶囊是一个密封的容器,里面装有一定数量的文件或文化资料,在规定的年限后可以打开。它向后代传达了特殊的记忆。[详细]
ty_清泉480 2022-05-03 05:37 开发者_开发知识库 那列式子的话,就是15a=9A,等于9÷15=0点六元[详细]
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