Last Updated：2025/11/29
The subaudible hum from the machinery made concentrating difficult, even though few could consciously hear it.
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The subaudible hum from the machinery made concentrating difficult, even though few could consciously hear it.
音声機能が動作しない場合はこちらをご確認ください
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機械からの可聴閾値以下のハミングが集中を難しくしたが、意識して聞こえる人はほとんどいなかった。
