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決して, けっして, けして
1. (not) ever, (not) by any means, (not) in the least, (not) in any way, (not) at all
绝(不),绝(非),绝(无)
は
1. indicates sentence topic
2. indicates contrast with another option (stated or unstated)
3. adds emphasis
指示句子的主题;表示与另一选项(无论是否明确提及)形成对比;表示强调