(1)cover completely or make imperceptible; "I was drowned in work"; "The noise drowned out her speech"
(2)完全に覆うか、感知できなくする
(1)I was drowned in work
(2)私は、作業に没頭した
(3)The noise drowned out her speech
(4)雑音は彼女のスピーチを聞こえなくした