回复：指头是比胳膊不准，所以一般都得抽胳膊确诊

来源: 于 2012-08-29 06:59:27 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

I understand that, usually finger tip is 20% higher than arm location. But, mine is way too beyond the sensible range.