- 1多年的（修飾身分或關係：多年好友、多年居民）
A long-time friend has been your friend for years. A long-time resident has lived in that place for a long time. A long-time fan has followed a team or a singer for years. The word sits in front of a noun and tells you that the person — or sometimes a group or a thing — has already had that role or that relationship for a long stretch. It looks back at time that has already passed. In American writing you will also see longtime as one word, with the same meaning. This is not the same as the two separate words in I waited a long time, which only measure duration. And it is not the same as long-lost: a long-time colleague is someone who has worked with you for years; a long-lost colleague is someone you have not seen in years. Long-term is different again: that word is about how long something will last, or about the future, not about how long someone has already been a friend or a neighbour.
「long-time」放在名詞前面，告訴你這個人（有時也可以是團體或事物）已經擔任某個角色或維持某段關係很長一段時間，例如「a long-time ＿＿」，像 a long-time friend（多年好友）、a long-time resident（多年居民）、a long-time fan（多年的粉絲）。它回看的是已經過去的時間。美式寫法也常寫成 longtime，意思相同。
這和 I waited a long time 那種只量時間長短的用法不同。它也和 long-lost 不同：long-time colleague 是多年來一起工作的同事，long-lost colleague 是多年沒見面的同事。long-term 又是另一回事，它講的是持續多久，或指未來，不是指一個人已經當了多久的朋友或鄰居。
組成long (a great stretch) + time.
原始詞典資料1 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
這個拼法也被記錄為下列字的變化形：
- longtime
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。