作品介绍:现有信封已沿用数百年。人们在拆封时,需用双手直接或借助刀具才能拆开信封。而今提出用单手就可以拆封,这不是神话,也不是特异功能表演。“单手可拆信封”的发明带给人们惊喜,它是一种为只有一只手的残疾人设计的信封。只要用一只手的两个指头就能轻松拆封。该发明是 Introduction: The existing envelope has been used for hundreds of years. When people unpack, they must use their hands directly or with a knife to open the envelope. Now it is proposed to use a single hand to unpack it. This is not a myth, nor is it a performance of a specific function. The invention of the “one-hand detachable envelope” has brought surprises to people. It is an envelope designed for disabled people with only one hand. Just two fingers of one hand can be easily opened. The invention is