2. 外语
  3. ______ (现在一项专利通过大约需要3年左右的时间), and today’s backlog of 500,000 is expected to double by the end of the decade unless there are big

______ (现在一项专利通过大约需要3年左右的时间), and today’s backlog of 500,000 is expected to double by the end of the decade unless there are big

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问题 ______ (现在一项专利通过大约需要3年左右的时间), and today’s backlog of 500,000 is expected to double by the end of the decade unless there are big changes.
选项
答案It now takes around three years for a patent to be approved
解析
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大学英语六级

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