单词：beneficial insect
beneficial insect的用法和样例：
例句
- Beneficial insects are allowed to flourish to keep pest insects in check.益虫得以繁衍，以遏制害虫的数量。
单词：beneficial insect 相关文章
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职称英语理工类词汇-基本短语结构 hear 0f听到，听说 put into effect生效 get out of control失控 come to a conclusion得出结论 decline invitation辞谢邀请 put into use使用，应用 put into practice落实 be satisfied with满
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不择手段背单词
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