I learn so much about happiness from watching my daughter with her friend — seeing the way they care for each other, copy each other, sing together, even fight and make up.
看着她们电话里聊得那么开心，她们那么的相互关心、相互影响、一起唱歌，甚至吵架然后又和好如初，我学到了很多。
Each model must have its own copy of the elements on which it is dependent from other layers and the architecture.
每个模型都必须有自己的元素副本，其他层和体系结构借助这些元素与相应模型产生依赖关系。
Copy the primary key columns from each of the other two tables to the junction table.
将其他两个表中的主键列都复制到联接表中。
Copy the primary key columns from each of the other two tables to the junction table.
将其他两个表中的主键列都复制到联接表中。
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