铁艺护栏网适合大批量生产，作为公路或公园小区隔离网，一般高度不超过2米，与自然环境相协调。
Iron Fence suitable for mass production, as the roads or parks, residential segregation network, the general height of not more than 2 meters in harmony with the natural environment.
一般来说，从地面以上365米的高度，整个国家都被管制空域覆盖。
In general, from 365m above the ground and higher, the entire country is blanketed by controlled airspace.
研究表明，完成高度创造性事业且年龄超过40岁的科学家中，有相当多的人进入该领域的年龄比一般人要大。
Studies show that a disproportionately large number of the scientists who produce highly creative work beyond the age of forty entered their field at an older age than is usual.
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