忠：忠诚；贞：有操守；渝：改变。忠诚坚定，永不改变。
忠贞不渝 [zhōng zhēn bù yú]
1. true to the core; uncompromising honesty; unswerving in one's loyalty; unswervingly loyalFaithful
求翻译：你 ····吃饭了没 是什么意思? ... 乔伊 » Joey 忠贞不渝 » Faithful 上个星期他就回城里了 » Last week he had to return to the Town ...
Nick Hornby High Fidelity
读过这本书吗？ ... A Long Way Down 长路 Nick Hornby High Fidelity 忠贞不渝 Prince Of Fire 火王子 ...
夫妻之间忠贞不渝
constancy between husband and wife
我忠贞不渝
Every single promise I keep
她对待信仰忠贞不渝
Faith underpins her life
更重要的是，夏威夷大学的林赛·杨发现，许多雌性配对的信天翁历经数年始终忠贞不渝。
What's more, Lindsay Young from the University of Hawaii found that many of the albatross female-female pairs remain faithful over several years.
这位老兄甚至公开宣示对苹果忠贞不渝，并指出当年如何退学，把一生都贡献给为苹果产品创造软件。
The man professed his undying loyalty to Apple, and pointed out how he even dropped out of school to devote his life to creating software for Apple products.
怀着这种矛盾心情，我唯一敢断言的是，通过正确估计可能产生影响的各种情况来克尽吾职，乃是我忠贞不渝的努力目标。 我唯一敢祈望的是，如果我在执行这项任务时因陶醉于往事。
In this conflict of emotions all I dare aver is that it has been my faithful study to collect, my duty from a just appreciation of every circumstance by which it might be affected.
成语，忠诚坚定，永不改变。可以对人，也可以对组织、信仰之类。
