Look, whoever is making that flapping sound, quiet down.
谁在弄出那翅膀拍打的声音？静下来！
Then I hear a flapping sound; it's near, but it's soft, like a lullaby.
我听见一阵拍打的声响，很近，很轻，就像一首摇篮曲。
After several days of rain, a gust of cold was blowing through the bald branches in the woods with a flapping sound.
接连下了几天雨，一阵冷风吹得光秃秃的树枝呼呼地响。
"Flap" sounds like something (a flag, a sail) flapping, and "flop" is the dull sound of something falling down flat.
而flop听着就象什么东西直直落地发出的沉闷一响.
Manifestation: Accompanied by the sound of flapping wings and cawing crows, Astaroth manifests as a hideously ugly angel.
显现：伴随着一阵扑翼声和乌鸦的鸣叫。
Within a minute, my kite was 18 rocketing to the sky. It made a sound like a paper bird flapping its wings.
不到一分钟，我的风筝扶摇直上，发出宛如鸟儿扑打翅膀的声音。
Within a minute, my kite was 18 rocketing to the sky. It made a sound like a paper bird flapping its wings.
不到一分钟，我的风筝扶摇直上，发出宛如鸟儿扑打翅膀的声音。
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