The pheromones evaporate quickly, however, so once all the food has been collected, the trail soon goes cold.
然而信息素挥发地很快，所以一旦食物搬运完毕，这条信息素路径就不复存在了。
On the remote Hermit's Trail off the South Rim of the Grand Canyon, a rare occurrence of rain brings joy to a cold November day.
时下正值冬季，天寒地冻，举目萧条。在大峡谷南缘的隐士步道——美国的西北角落，一道彩虹罕见地划空而出，叫人好生欢喜。
Those seeking the owners’ real names and addresses there find that the trail goes cold with a nominee—a lawyer or accountant—who shields clients from nosy outsiders.
那些探寻公司所有者真实姓名和地址的人在这里会备受公司公民代理的阻挠。 这些代理可能是名律师，也可能是名会计，他们会保护客户不受外界打探消息的人的骚扰。
The 29-year-old Internet policy analyst had built his family tree back to ancestors in Bask, Ukraine, but that's where the trail went cold.
这位29岁的国际互联网政策分析人已把他的家谱祖先追溯到了乌克兰的巴斯科，可在那里线索断了。
Through past few years, trail investigation, of cold area natural marble surface installation , on its quality and construction method, this paper puts forward views and suggestions.
通过近几年来对寒冷地区天然大理石饰面安装的跟踪调查，就其质量和施工方法做些探讨。
Long on the trail, who would be out in the cold Zhang Yin, "Kuteng trees faint crow" do?
漫漫的古道上，还会有人在寒风中长吟“枯藤老树昏鸦”吗？
The Trail of Tears was one of many terrible examples: in the cold winter of 1838-1839 17000 Cherokees had to move from their land in the south-east to what is now Oklahoma and more than 4000 died.
“血泪之路”就是许多悲惨的例子之一：1838年至1839年的寒冬，切诺基部落的1万7千人被迫从美国东南部的家乡迁往现在的俄克拉何马州，4000多人在途中死亡。
The Trail of Tears was one of many terrible examples: in the cold winter of 1838-1839 17000 Cherokees had to move from their land in the south-east to what is now Oklahoma and more than 4000 died.
“血泪之路”就是许多悲惨的例子之一：1838年至1839年的寒冬，切诺基部落的1万7千人被迫从美国东南部的家乡迁往现在的俄克拉何马州，4000多人在途中死亡。
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