最終更新日:2025/11/29

The beekeepers were alarmed when they discovered that several colonies had developed nosema disease, which weakened the workers and reduced honey production.

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The beekeepers were alarmed when they discovered that several colonies had developed nosema disease, which weakened the workers and reduced honey production.

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元となった例文

養蜂家たちは、いくつかの群れでノセマ属の微胞子虫による感染症が発生し、働き蜂が衰弱して蜂蜜の生産が減少しているのを知って驚いた。

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