flapped outfall
The Swedish parliament.
An outfall fitted with a metal flap so that floodwater will not back up
The process of breaking up earth with a harrow. / Suffering, torment. / Ravaging; hostile incursion; spoliation; intentional widespread destruction.
plural of castor
大雨の後、町の保守チームは金属製のフラップが取り付けられた排水口を点検し、そのフラップが下水道への逆流を防いだことを確認した。
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