Describe the software components in the model, present the standardization among domain components and data conceal, reach purpose of plug and play.

对模型中的软件构件进行描述，实现了领域内构件间接口的标准化，构件源代码的数据隐藏，达到即插即用的效果。

youdao

Given the many opportunities that such outside accounts present to conceal wrongdoing or evade oversight, brokerage firms have become increasingly resistant to granting employees permission to open or maintain them.

FORBES: Bill Singer��s Comment