In phone talk, roaming is what your mobile does when it is away from its usual network — often in another country — and has to connect to a different company's network so you can still call, text, or use data. That extra use is billed as roaming charges, which can be painfully high, so people buy a local SIM or switch data off.

In phone talk在手機的說法裡, roaming roaming是 what your mobile does你的手機做的事 when it is away from its usual network當它離開平常連的網路的時候 (often in another country常常是在國外) and has to connect to a different company's network而必須連上別家公司的網路 so you can still call, text, or use data這樣你才能繼續打電話、傳訊息或用數據。That extra use這種額外使用 is billed as roaming charges會被收取漫遊費，which can be painfully high可能貴得嚇人，so people buy a local SIM or switch data off所以有人會買當地SIM卡或乾脆關掉數據。

There is also roaming inside one country, when your own company has no signal and another network carries you.

When your own company has no signal當你自己的電信公司沒有訊號 and another network carries you而由另一家網路幫你接通時, there is also roaming inside one country同一個國家裡也有roaming這回事。

Though actually, the older verb roam still means to wander about with no fixed path; this phone sense is a later picture of the phone wandering onto someone else's network.

Though actually不過其實, the older verb roam動詞roam較早的意思 still means to wander about with no fixed path還是指沒有固定路線到處遊蕩; this phone sense而手機的這個用法 is a later picture of the phone wandering onto someone else's network是後來才有的畫面，把手機想像成遊蕩到別人的網路上。

Shops and phone plans in Taiwan almost always use the Chinese term, not the English word.

Shops and phone plans in Taiwan台灣的門市和門號方案 almost always use the Chinese term幾乎都用中文的「漫遊」這個詞, not the English word而不是英文原字。