What five steps need to occur to improve A-V communication systems?

为了促进视听传播系统，需要采取哪五个步骤？

youdao

V. I notice that there is a five-year gap between your last job and now.

我发现从你的前一份工作到现在，有五年是空白。

youdao

V. I notice that there is a five-year gap between your last job and now.

我发现从你的前一份工作到现在，有五年是空白。

youdao