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Patent Patents【T1】______the chances of inventors to make money from【T2】______.【T3】______. During that time, the inventor【T4】
Patent Patents【T1】______the chances of inventors to make money from【T2】______.【T3】______. During that time, the inventor【T4】
admin
2016-07-18
52
问题
Patent
Patents【T1】______the chances of inventors to make money from【T2】______.【T3】______. During that time, the inventor【T4】______ to【T5】______. After 20 years,【T6】______ make or sell the invention.
A patent gives【T7】______time to develop and market a product. Patents also provide a way to share and spread【T8】______
【T9】______you have an idea for an invention How do you【T10】______? The first step is【T11】______. You must be sure【T12】______. So you must【T13】______ that already have patents. This can be a big job and【T14】______. Many inventors【T15】______.
【T14】
选项
答案
take a long time
解析
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专业英语四级
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