The fans whirred inside the mill, a cloud of chaff blew out its front, and the kernels of clean wheat poured out of its side and went sliding down the rising heap on the floor.
fan
(ファン)
[名]
a machine that produces a current of air
whir
(回る)
[動]
move or cause to move with a whirring sound
mill
(選別機)
[名]
a machine for grinding grain
chaff
(もみ殻)
[名]
the husks of grain separated from the seed by threshing
選別機の中でファンが回り、もみ殻の雲が前面から吹き出し、きれいな小麦の粒が側面から流れ出て、床に積み上がった山を滑り落ちていった。