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なかなか， 中々， 中中， 仲々， 仲仲， 却々， 却却
1. very, considerably, easily, readily, fairly, quite, highly, rather
2. by no means, not readily
3. middle, half-way point
4. excellent, wonderful, very good
很，非常，相当；非常好
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
