低落

(1)decrease in size, extent, or range; "The amount of homework decreased towards the end of the semester"; "The cabin pressure fell dramatically"; "her weight fell to under a hundred pounds"; "his voice fell to a whisper"

(2)サイズ、または範囲を縮小する

(3)move downward and lower, but not necessarily all the way; "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again"

(4)下と低い方へ向かうが、必ずしもずっと行かない

(1)