为测验这些“祖母军”的重要性，井吴博士和其同事引入了一种以蚜虫为食的瓢虫幼虫。
To test the importance of these militant matrons, Dr Keigo and his colleagues introduced predatory ladybug larvae to the plants.
为测验这些“祖母军”的重要性，井吴博士和其同事引入了一种以蚜虫为食的瓢虫幼虫。
To test the importance of these militant matrons, Dr Keigo and his colleagues introduced predatory ladybug larvae to the plants.
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