Until now, the connection of sensors to the Internet was a costly, engineering-intensive process.

到现在为止，传感器到因特网的连接是一个昂贵的，精深的工程过程。

youdao

Until now, the connection of sensors to the Internet was a costly, engineering-intensive process.

到现在为止，传感器到因特网的连接是一个昂贵的，精深的工程过程。

youdao