大発生 (だいはっせい) — explosive increase (in number of pests); (severe) outbreak or upsurge of pests
大発生
だ い は っ せ い
Explosive increase (in number of pests); (severe) outbreak or upsurge of pests
Bildminhhä

大発生 (だいはっせい) — explosive increase (in number of pests); (severe) outbreak or upsurge of pests
