划时代 huàshídài epoch-marking
How to remember 划时代: 划 to row or paddle a boat + 时 time + 代 era = epoch-marking.
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How it is used
- 'Epoch-making / landmark' - marking a new era: 划时代的发明 (huàshídài de fāmíng) an epoch-making invention, 划时代的意义 historic significance.
- High praise reserved for genuinely era-defining events or works, not just impressive ones.