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A landline is a telephone that works through wires in the ground and in the walls, not through a mobile phone in your pocket. People also say landline for the number of that phone, or for the whole wired service in a house.
A landline市話 is是指 a telephone一種電話 that works through wires in the ground and in the walls,靠地下和牆壁裡的電線運作， not through a mobile phone in your pocket.而不是靠你口袋裡的手機。People also say landline人們也會用landline這個字 for the number of that phone,指那支電話的號碼， or for the whole wired service in a house.或指一整個家裡的有線電話服務。
Today we mostly set it against a mobile: ‘Call me on the landline; the signal is bad here.’ Though actually the name is older than — a land line was first a wire that ran over land, as opposed to a cable under the sea. Now almost nobody is thinking of the ocean when they say it.
Today we mostly set it against a mobile:現在我們大多是拿它跟手機做對比： 'Call me on the landline; the signal is bad here.''Call me on the landline; the signal is bad here.'打市話給我這裡訊號不好 Though actually不過其實 the name is older than mobiles這個名字比手機還要早出現 — a land line was first a wire that ran over land,——land line一開始是指一條走陸地的電線， as opposed to a cable under the sea.相對於海底的電纜。Now almost nobody is thinking of the ocean現在幾乎沒有人會想到海洋 when they say it.講這個字的時候。
It feels a little old-fashioned among young people, who may not have one at home, but offices, , and alarm systems still use them. In careful talk you may hear fixed line; in everyday English, landline is the usual word.
It feels a little old-fashioned它在年輕人之間感覺有點過時 among young people,， who may not have one at home,他們家裡可能根本沒有市話， but offices, grandparents, and alarm systems但辦公室、祖父母，還有警報系統 still use them.還是會用。In careful talk在比較正式的說法裡 you may hear你可能會聽到 fixed line;fixed line固定電話； in everyday English,在日常英文裡， landline is the usual word.landline才是常用字。
It is not the internet cable, and it is not Wi-Fi, even though those also use ‘lines’ in a loose way.
It is not the internet cable,它不是網路的網路線， and it is not Wi-Fi,也不是Wi-Fi， even though those also use 'lines' in a loose way.雖然那些東西也會鬆散地用'lines'（線）這個概念。
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
landlinenoun/ˈlændˌlaɪn/
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A fixed telephone communications cable; originally, one run over land, as opposed to a submarine cable.
- The land line was eight months later in its completion than was anticipated, but the fleet of cable ships, sent out by the British Australian Telegraph Company, arrived in Port Darwin at the date appointed by them: November 6th, 1871.
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A telephone connected by such a fixed wire that allows multiple phones to operate simultaneously on the same phone number, specifically not cellular or mobile.
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That which is connected by such a fixed wire (telephone, internet etc.).
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。