专家表示，迄今为止每个人可以自主控制使用手机的频率。

For now, experts say, it's up to individuals to decide how much to use their cell phones.

youdao

专家表示，迄今为止每个人可以自主控制使用手机的频率。

For now, experts say, it's up to individuals to decide how much to use their cell phones.

youdao