There were no domain objects in the system either.

系统中也没有领域对象。

youdao

There is an important note here: you can build domain objects only once.

这里有一个重要注意事项：你只有一次建立域对象。

youdao

There is an important note here: you can build domain objects only once.

这里有一个重要注意事项：你只有一次建立域对象。

youdao