troughKK [ˋtrɔf] /ˈtɹɔf/名詞1水槽、飼料槽The farmer filled the trough with fresh water for the horses.農夫在水槽裡裝滿清水給馬喝。2低谷、谷底Sales have finally climbed out of the trough they hit last winter.銷售額終於走出去年冬天的低谷。3波谷A small boat disappeared into the trough between two huge waves.一艘小船消失在兩道巨浪之間的波谷裡。4低壓槽氣象A trough of low pressure will bring heavy rain to the island tonight.一道低壓槽今晚將為本島帶來大雨。5凹槽、溝槽Rainwater collected in a shallow trough along the roadside.雨水積在路邊一道淺淺的溝槽中。