忠贞不渝 [zhōng zhēn bù yú]1. true to the core; uncompromising honesty; unswerving in one's loyalty; unswervingly loyal
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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 ...
constancy between husband and wife
Every single promise I keep
Faith underpins her life
What's more, Lindsay Young from the University of Hawaii found that many of the albatross female-female pairs remain faithful over several years.
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.
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.