名词
中文翻译：Unknown
同义词：
['beneficial insect', 'beneficial organism', 'usefulinsect']
例句：
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1. Thesehelpful insects are a great source of foodfor many birds and animals.
这些有益的昆虫是许多鸟类和动物的食物来源。
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2. Thebees are known to be helpful inpollinating flowers.
蜜蜂被认为在传粉方面很有帮助。
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3. Thehelpful insects play an importantrole in maintaining the ecosystem's balance.
有益的昆虫在维持生态系统平衡中起着重要作用。