摘要：
Farmer John goes to Dollar Days at The Cow Store and discovers an unlimited number of tools on sale. During his first visit, the tools are selling var 阅读全文
posted @ 2017-08-30 16:56
天之道，利而不害
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摘要：
Keeping track of all the cows can be a tricky task so Farmer John has installed a system to automate it. He has installed on each cow an electronic ID 阅读全文
posted @ 2017-08-30 15:31
天之道，利而不害
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