<section>写法一:
  <ruby>
    <rb></rb><rt>han</rt><rp>(han)</rp>
    <rb></rb><rt>zi</rt><rp>(zi)</rp>
  </ruby>
</section>

<section>写法二:
  <ruby><rp>(</rp><rt>han</rt><rp>)</rp><rp>(</rp><rt>zi</rt><rp>)</rp>
</ruby>
</section>

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