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关注：1
2013-05-23 12:21
求翻译：In temperate regions cultivated Cruciferae can be attacked by 50 - 60 insect species? of which about 20 are major pests of crop plants, damaging all the - 120 different stages of growth of the crop and all parts of the plants. The relative importance of individual insect species as pests varies from crop to crop and* a是什么意思？ 待解决
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- 离问题结束还有
In temperate regions cultivated Cruciferae can be attacked by 50 - 60 insect species? of which about 20 are major pests of crop plants, damaging all the - 120 different stages of growth of the crop and all parts of the plants. The relative importance of individual insect species as pests varies from crop to crop and* a
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2013-05-23 12:21:38
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2013-05-23 12:23:18
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2013-05-23 12:24:58
在温和地区耕种的十字花科可以由50个- 60个昆虫种类攻击？ 其中大约20是庄稼主要虫，损坏庄稼和植物的所有部分的成长所有- 120个不同阶段。 各自的昆虫种类的相对重要性作为虫从庄稼变化到庄稼and*，虽然很大数量的有些种类也许存在，种类被考虑作为虫，只有当大数与特殊庄稼时脆弱的阶段相符，
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2013-05-23 12:26:38
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2013-05-23 12:28:18
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