“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds

無限連鎖講: pyramid scheme

Florence (a city in Alabama) / Florence (a city in Kentucky) / Florence (a city in South Carolina)

(historical) the Allies

(music) etude

(mineralogy) zoisite

Synonym of 夜咲睡蓮 (yozaki suiren): Nymphaea lotus (white Egyptian lotus)

Nymphaea lotus, the white Egyptian lotus

ländler (Austrian folk dance)

suicide from carbon monoxide suffocation by charcoal burning