Innumerable are they, and it is not thy lot to be a fly-flap.
他们多于恒河沙数，而你的命运不是蝇拍。
A window frame made of insulating materials according to the principle of an electric fly-flap.
根据电蚊蝇拍的原理，用绝缘材料做窗框。
Taking advantage of phototaxis of insects, the electric fly-flap can even kill mosquitoes and flies even in day time.
电蚊蝇纱窗利用蚊蝇趋光的 习性，在白天也能杀灭室内的蚊蝇。
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