Birds and frogs singing their lovely songs in the evening 夜間郊區晚上青蛙birds.wav 聲道:2 類型:wav birds、soundscape、ambience、ambient、ambiance、spring、frogs、nature、field-recording、evening、atmosphere 鳥類、音景、環境、周圍、氣氛、彈簧、青蛙、性質、現場記錄、晚間、大氣層 資料來源:freesound ( https://freesound.org )