The number of reported bird strikes has increased since nineteen ninety.
自九十年代以来，鸟撞事件的报告数量一直在增加。
The reports of bird strikes come from eyewitnesses on the ground, " said Brown.
有多个报道称地面目击者看到飞鸟，”布朗说。
Another reason for the increase in bird strikes is the growing popularity of air travel in the United States.
另一个导致鸟撞事件增加的原因是美国空中旅行的普及程度的增加。
Bird strike Committee USA says bird strikes cause about six hundred million dollars in damage to American civilian and military aviation each year.
美国鸟撞委员会说：每年，鸟撞击事件导致美国的民用和军事航空业大约6亿美元的损失。
Aircraft are at their most vulnerable to bird strikes during take off and landing: over 60% of all bird strikes occur below 100 feet, less than 8% above 3,000 feet.
飞机在起飞和降落是最易遭受撞鸟事件的：超过60%的撞鸟事件发生在低于100英尺，在3000英尺以上不到8%。
Aircraft are at their most vulnerable to bird strikes during take off and landing: over 60% of all bird strikes occur below 100 feet, less than 8% above 3, 000 feet.
飞机在起飞和降落是最易遭受撞鸟事件的：超过60%的撞鸟事件发生在低于100英尺，在3000英尺以上不到8%。
So, when the young bird of prey begins his attack, strikes his sharp talons into the marrow of the wolf's backside and cuts off its nerves, it doesn't roar at once.
所以，当那只年轻的猛禽开始攻击它，用那只利爪抓住它的后臀，直扎透骨缝、掐断神经的时候，它没叫。
So, when the young bird of prey begins his attack, strikes his sharp talons into the marrow of the wolf's backside and cuts off its nerves, it doesn't roar at once.
所以，当那只年轻的猛禽开始攻击它，用那只利爪抓住它的后臀，直扎透骨缝、掐断神经的时候，它没叫。
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