Around for a long time, and because of that, solid — people know it, trust it, and expect it to stay. It is used two main ways.

Around for a long time存在很久了, and because of that也因為這樣, solid很穩固 — people人們 know it認識它, trust it信任它, and expect it to stay也預期它會一直在。It它 is used two main ways主要有兩種用法。

About businesses and organisations: a well-established company, school, or restaurant is one that has been running for years, has customers, and is not going to disappear next month. This is the everyday use, and it is a compliment — it says 'safe, reliable, proven'.

About businesses and organisations用在公司行號和機構: a well-established company, school, or restaurant這樣的公司、學校或餐廳 is one that has been running for years是已經經營多年, has customers有客源, and is not going to disappear next month下個月也不會消失的那種。This這 is the everyday use是日常的用法, and it is a compliment而且是稱讚 — it says它說的是 'safe, reliable, proven'「安全、可靠、經得起考驗」。

About ideas and facts: a well-established theory or a well-established practice is one that has been tested and accepted for a long time, so people no longer argue about it. Both uses share the same core: time has done the proving.

About ideas and facts用在想法和事實: a well-established theory or a well-established practice這樣的理論或做法 is one that has been tested and accepted for a long time是被檢驗、被接受很久的那種, so所以 people人們 no longer argue about it不再爭論它。Both uses兩種用法 share the same core共用同一個核心: time時間 has done the proving已經把證明做完了。

Notice the quiet extra meaning — well-established is not only old, it is also fixed in place, hard to move. That is why the word is sometimes used with a small sigh, about a habit or a tradition nobody can change any more: 'the custom is well-established'. The word is fairly formal and very common in business writing and news.

Notice注意 the quiet extra meaning那層安靜多出來的意思 — well-established is not only old不只是老, it is also fixed in place它也是固定住了, hard to move很難搬動。That is why所以 the word這個字 sometimes有時 about a habit or a tradition nobody can change any more講到誰也改不動的習慣或傳統時 is used with a small sigh會帶著一聲小小的嘆息來用: 'the custom is well-established'這習俗已經根深柢固。The word這個字 is fairly formal相當正式, and in business writing and news在商業書寫和新聞裡 very common很常見。