昆虫数目近几十年来 让人担心地 降低，科学家表示，光污染可能是其中一个原因。英国一项研究发现，人造路灯会扰乱夜蛾的行为，使毛虫数目降低一半。Theres growing alarm over plunging1 insect populations with climate change, habitat destruction and pesticides2 all thought to play a role. But now, scientists say theres another culprit: artificial streetlights.大家对昆虫数目的锐减愈发感到担心，气候变化、栖息地被破坏和杀虫剂的用法都被觉得是导致这一近况的原因。但目前，科学家指出还有另一个缘由人造路灯。Researchers from the charity Butterfly Conservation counted caterpillars4 at the sides of brightly lit roads. Compared with similar stretches of unlit roads, caterpillar3 numbers were reduced by half, suggesting streetlights can affect the abundance of insects at least on a local scale.慈善机构蝴蝶保护委员会（Butterfly Conservation）的研究职员在灯光明亮的道路两旁清点了毛虫的数目。与没照明的类似路段相比，毛虫数目少了一半，这表明路灯可以影响昆虫数目是不是充足，至少在当地范围内是这样。The scientists say with insects in trouble, we should be doing all we can to reduce negative influences. But there are practical solutions such as dimming streetlights in the early hours, installing motion sensors5, or using colour filters to modify the light.科学家指出，因为昆虫陷入了存活困境，大家应竭尽所能降低对它们的负面影响。但同时，也存在一些切实可行的解决方法，譬如在凌晨调暗路灯的灯光、安装运动传感器或用彩色滤光片来改变光线。
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1 plunging adj.跳进的，突进的v.颠簸；狂跌；骤降；突降 参考例句： War broke out again, plunging the people into misery and suffering. 战祸复发，生灵涂炭。 来自《现代汉英综合大词典》 He is plunging into an abyss of despair. 他陷入了绝望的深渊。 来自《简明英汉词典》
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