They are initially empty (when the data graph is returned to a client) and populated as the data graph is modified.

变更摘要最初是空的（数据图刚返回客户机的时候），随着数据图的变化逐渐填充。

youdao

They are initially empty (when the data graph is returned to a client) and populated as the data graph is modified.

变更摘要最初是空的（数据图刚返回客户机的时候），随着数据图的变化逐渐填充。

youdao