MbMessage object is used to create output message tree, environment tree, local environment tree, exception list tree, etc.

MbMessage对象用于创建输出消息树、环境树、本地环境树、异常列表树等等。

youdao

This is accomplished by having an exception list that is updated every time something changes between the LVs (formally known as CoW, Copy-on-Write).

快照由一个例外列表(exception list)来实现，每当LV之间出现差异时就会更新这个列表(正式的说法是CoW,Copy - on - Write)。

youdao

This is accomplished by having an exception list that is updated every time something changes between the LVs (formally known as CoW, Copy-on-Write).

快照由一个例外列表(exception list)来实现，每当LV之间出现差异时就会更新这个列表(正式的说法是CoW,Copy - on - Write)。

youdao