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动物不仅是人类的好朋友,而且是人类的好帮手。更可贵的是,它们在帮助人类的时候并不索取任何回报。鸽子搜救员美国海岸警卫队驯养的鸽子,能在茫茫大海里搜筲
Animals are not only good friends of human beings, but also human beings. Even more valuable is that they do not claim anything in helping humanity. Dove search and rescue officer US Coast Guard domestication of pigeons, can search Sharu in the vast ocean