Tāmen de àiqíng shǐzhìbùyú, jīnglì le wúshù kǎoyàn.
Their love remained steadfast through countless trials.
Tips
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Formal and literary — fits speeches, biographies, love declarations in formal writing. In casual speech use 一直 or 从未改变 instead.
memory
矢 originally means 'arrow', by extension 'to swear/pledge' (as if releasing an oath like an arrow). 渝 = to change (cognate with Chongqing's abbreviation 渝, from the river). Literally 'pledge the resolve, do not change'.
