conventional

Compared meaning: following long-established customs or practices (adjective).

比较义项：遵循长期存在的习俗、信仰或做法（传统的／惯常的）（形容词）。

• traditional

  The neutral, broadest term: describes any custom, belief or practice handed down over generations, without implying it is the only accepted version or that it resists change; used for food, clothing, art, medicine, etc.

  语气最中性、含义最广的词：指世代相传的习俗、信仰或做法，并不暗示这是唯一被接受的方式，也不暗示它抗拒改变；可用于食物、服饰、艺术、医学等方面。

  Traditional Chinese medicine has been practiced for thousands of years across Asia.

  中医已经在亚洲被使用了数千年。

• conventional 本词

  Describes what is usual or standard practice today, often implying it is unoriginal or ordinary compared with newer alternatives; frequently appears in fixed phrases like conventional wisdom or conventional methods.

  指当下通行或标准的做法，常暗示这种做法平庸、缺乏新意，是相对于更新颖的替代方案而言的；常出现在固定搭配中，如"conventional wisdom"（普遍看法）或"conventional methods"（常规方法）。

  Conventional wisdom says you should pay off debt before you start saving.

  普遍看法认为，你应该先还清债务，再开始存钱。

• orthodox

  Describes strict, formal adherence to an established set of beliefs or doctrines, especially religious or ideological; stronger and more formal than the other two, implying a recognized 'correct' version to follow.

  指严格、正式地恪守某一体系公认的信仰或教义，尤其是在宗教或意识形态方面；比另外两个词更强烈、更正式，暗示存在一个公认的“正确”版本需要遵循。

  He is an orthodox Christian who follows every official church doctrine without exception.

  他是一名正统基督徒，毫无例外地遵循每一条官方教义。

All three describe following established customs. Traditional is the broadest, most neutral, for any custom over generations. Conventional describes what is usual today, often implying unoriginal, as in conventional wisdom. Orthodox describes strict adherence to established beliefs, especially religious, and is the strongest, most formal.

这三个词在“遵循以往做法”这一意义上很接近，但语气和适用范围不同：traditional最中性、最常用，orthodox最正式、最强调对某一体系（尤其宗教或思想）的严格遵从，conventional则常带有“平庸、缺乏新意”的弦外之音，并且多用于conventional wisdom（普遍看法）这类固定搭配。