郑人买履中有“因自度其足”中有“度”,该如何发音?

自度其足,这个“度”应该度（duó）：量长短。下文的 勿忘尺度 的“度”念度（dù)：量好的尺码。因为两个度的意思不同,词性也不同,一个是动词,后一个是名词。
郑人有欲买履者,先自度其足,而置之其坐。至之市,而忘操之。已得履,乃日："吾忘持度。"反归取之。及反,市罢,遂不得履。人日："何不试之以足?"曰："宁信度,无自信也。"
意译：
有个想买鞋子的郑国人,他先度量好自己的脚的尺寸,然后把它放在了自己的座位上。准备去集市时,忘了拿量好的尺寸。他在集市上选好鞋子后,才想起自己忘了拿尺寸,他说：“我忘带鞋子的尺寸了。”于是返回去取尺寸。等到他返回集市的时候,集市已经散了,最终没买到鞋。有人问：“为什么不用你的脚试一试呢?”他说：“我宁可相信量好的尺码,也不相信自己的脚。”
Buying shoes
A man of the state of Zheng wanted to buy a pair of shoes。He measured his foot and put the measurement on a chair。When he set out for the market he forgot to bring it along。It was after he had found the pair he wanted that this occurred to him。
I forgot the measurement,said he。
He went home to get it but when he returned the market had broken up and he did not get his shoes after all。
Why didn't you try on the shoes with your feet?
He was asked。
I 'd rather trust the measurement than trust myself。(《Hanfeizi》)
最佳答案、、、修改的很好了。