[翻译] 关于不定冠词a 的用法的疑惑

2011-3-13 19:02
355810
nigerose  高级会员 | 2011-3-15 17:57:24

Re:关于不定冠词a 的用法的疑惑

google:
\" invention relates to a method and a system \"
77 results

\" invention relates to a method and system \"
86 results

\" invention relates to method and system “
33 results
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