萤火虫属于有翼甲虫类，在晚上它们通过腹部的化学物质放出绿色光亮。
Fireflies are winged beetles and give off a green luminous glow from chemicals in their lower abdomen at night.
萤火虫大家都熟悉，但鲜有人知道这些昆虫其实属于甲虫，萤科家族的夜猫子。
Fireflies are familiar, but few realize that these insects are actually beetles, nocturnal members of the family Lampyridae.
萤火虫属于有翼甲虫类，在晚上它们通过腹部的化学物质放出绿色光亮。科学家一般称这一过程为“生物发光”。(实习编辑：顾萍)。
Fireflies are winged beetles and give off a green luminous glow from chemicals in their lower abdomen at night. And scientists call this process as bioluminescence.
萤火虫属于有翼甲虫类，在晚上它们通过腹部的化学物质放出绿色光亮。科学家一般称这一过程为“生物发光”。(实习编辑：顾萍)。
Fireflies are winged beetles and give off a green luminous glow from chemicals in their lower abdomen at night. And scientists call this process as bioluminescence.
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