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关注：1
2013-05-23 12:21
求翻译：二手资料的优点是省钱、省时、省力。比较容易做对比研究和趋势研究。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
二手资料的优点是省钱、省时、省力。比较容易做对比研究和趋势研究。
问题补充： |
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2013-05-23 12:21:38
The secondary advantage is to save money, save time and effort. Easier to do comparative studies and trend research.
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2013-05-23 12:23:18
false
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2013-05-23 12:24:58
Two material merits are economize, time-saving, reduce effort.Compared with easy to do the contrast research and the tendency research.
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2013-05-23 12:26:38
Second-hand information advantage is saving money, saving time and effort. Easy for comparative research and trend research.
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2013-05-23 12:28:18
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