Strangely enough, some inventions are lost {#blank#}1{#/blank#} people can't imagine their {#blank#}2{#/blank#} (valuable). A use may need to be "invented" along with the invention. An example is the fax machine. The technology for faxing {#blank#}3{#/blank#} (invent) in the 1800s. It took more than one hundred years, however, for the fax to be seen as useful. In 1843 Alexander Bain invented a machine to {#blank#}4{#/blank#} (electrical) transmit（传输） writing. At first, it was considered {#blank#}5{#/blank#} (use) since few people thought there was {#blank#}6{#/blank#} need for transmitting writing over {#blank#}7{#/blank#} (wire). Eventually the value of the invention was realized, and it was improved {#blank#}8{#/blank#} office use. By the 1980s, the fax machine became a piece of standard {#blank#}9{#/blank#} (equip) in offices. The reason is {#blank#}10{#/blank#}it can very quickly transmit written documents. Who knows how many other inventions just need to be recognized as valuable?