This is almost instantaneous with this electronic system. Then simply dial the numbers of the extension.

不过在这个电子系统中，一拿起手机马上就能听到拨号音。然后只要拔分机号就行了。

youdao

This is almost instantaneous with this electronic system. Then simply dial the numbers of the extension.

不过在这个电子系统中，一拿起手机马上就能听到拨号音。然后只要拔分机号就行了。

youdao