求翻译：现在，很多家庭装修后，客人来访都要换鞋，很不方便，有些人对换“公用”拖鞋入内的习惯感到很不卫生。对此，经过观察各类鞋型，他研制发明了既卫生又方便的“机械自动免脱拖鞋”。2006年，“机械自动免脱拖鞋”获得了国家专利。是什么意思？

Now, a lot of home improvement, the visitor must change shoes, very convenient, some people change "public" slippers into the habit was unsanitary. In this regard, after the observation of various types of shoes, he developed the invention of hygienic and convenient mechanical auto-off slippers. 200

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Now, after many home improvements, visitors have to change shoes, inconvenient, some people swap "public" slippers into the habit is very unsanitary. In this regard, through the process of observation for all kinds of shoes, he developed inventions is hygienic and convenient "automatic mechanical re