2￡?ííücà???òaê??ò2?μ?è??éê?òa′ò?¨?¨μ?°??￡?1
????D??Do￠à???×ì°?????￡?ê?é???×￥???a?xμ?ò???2?·??￡??2???°?°?±?′ò?¨?¨￡?ó???2?μ??é???ˉáá?e????????e???ú?ò???ò???1
?????a?x?o??μ??ó?eD??Do￠μ?ê?￡???á????￡???e????óDê?￡???ó°é￡???ììóD???e???ùè￥?ò??í??￡?1
????D??Do￠??á???￡?×￥???a?x1′á?ê???￡??2?????2??ê??μ?ó?á?ê??￡