最近很多市政公园在割完岸边植物还没有补水的岸边，可以看到金眶(kuàng)鸻(héng)。它们小腿儿紧倒腾，跑起来非常快。它的眼睛外圈仿佛带个黑眼罩，配合金色的眼底，露出一块白色羽毛在额头到喙之间，面部特征让人眼前一亮。它们体型大小和鸿雁比较算是小巧精致。和经常同样出现岸边的白鹡(jí)鸰(líng) 比较，虽然身形接近，它们跑动的样子和很大区别。白鹡鸰有蹦蹦跳跳的时候，它们则是飞驰而且～#观鸟 #北京观鸟 #鸟类摄影

你不知道的冷知识

最近很多市政公园在割完岸边植物还没有补水的岸边，可以看到金眶(kuàng)鸻(héng)。

它们小腿儿紧倒腾，跑起来非常快。

它的眼睛外圈仿佛带个黑眼罩，配合金色的眼底，露出一块白色羽毛在额头到喙之间，面部特征让人眼前一亮。

它们体型大小和鸿雁比较算是小巧精致。

和经常同样出现岸边的白鹡(jí)鸰(líng) 比较，虽然身形接近，它们跑动的样子和很大区别。

白鹡鸰有蹦蹦跳跳的时候，它们则是飞驰而且～

#观鸟 #北京观鸟 #鸟类摄影

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Bitcoin is built on a distributed digital record called a blockchain. As the name implies, blockchain is a linked body of data, made up of units called blocks that contain information about each and every transaction, including date and time, total value, buyer and seller, and a unique identifying code for each exchange. Entries are strung together in chronological order, creating a digital chain of blocks. “Once a block is added to the blockchain, it becomes accessible to anyone who wishes to view it, acting as a public ledger of cryptocurrency transactions,” says Stacey Harris, consultant for Pelicoin, a network of cryptocurrency ATMs. Blockchain is decentralized, which means it’s not controlled by any one organization. “It’s like a Google Doc that anyone can work on,” says Buchi Okoro, CEO and co-founder of African cryptocurrency exchange Quidax. “Nobody owns it, but anyone who has a link can contribute to it. And as different people update it, your copy also gets updated.”