刘收到这支笔后，开心地对全班同学说：“我们班里有个活雷锋！”

After Liu received this pen, he said to whole classmates happily: "There is a living Lei Feng in our class!"

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刘宇和同学们很快为黄西的校园演讲设计了一张醒目的海报。

So Liu and his schoolmates quickly designed an eye-catching poster for Huang's campus talk.

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刘凯是我的同班同学。

Liu Kai is my classmate.

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