She saw the occasional glimmer of a moth 's wings.
她看见蛾子的翅膀偶尔会泛光。
In normal flight a hummer 's wings beat about18-80times per second depending on the size of the bird.
蜂鸟曰常飞行时，羽翼大约每秒拍打十八到八十次，视鸟的大小而定。
In normal flight a hummer 's wings beat about18-80times per second depending on the size of the bird.
蜂鸟曰常飞行时，羽翼大约每秒拍打十八到八十次，视鸟的大小而定。
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