添加到XML Stage的前一阶段的列可以修改、删除，也可以添加新列。

The columns that were added to the preceding stage of the XML stage can be modified, removed, or new columns can be added.

youdao

其中每个阶段都接受来自前一阶段的模型，通过变换和创建工作，产生本阶段的模型，并作为后阶段的输入。

Each phase takes the model of previous phase as input and produce its result model as the input of next phase after transformation and creation work.

youdao

第二阶段：适合5 - 7岁的儿童。在巩固前一阶段学习的同时，加入一些字母组合读音的教学，让孩子对学习拼读单词有兴趣。

The second stage: suitable for children aged 5-7. Consolidating the previous knowledge, we add some letter combinations into class to develop their interest for spelling skills.

youdao