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春天来了,天气开始慢慢转暖了。皮皮最近老觉得无聊,每天没事做。这天,他收到了一封来自加拿大给博士的信……
Spring is coming and the weather is getting warmer. Pippi feel bored recently, doing nothing every day. On this day, he received a letter from Canada to Dr. ...