我第一次遇见8岁的凯蒂是在一个下雨的下午。

I first met 8-year-old Katy on a rainy afternoon.

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在一个即将下雨的下午，曾国辉，这个41岁的工人，来到了在他过去工作过的废弃矿井旁，这里仍然是一片泥泞的荒凉的地方。

On a recent rainy afternoon, Zeng Guohui, a 41-year-old laborer, walked to an abandoned mine where he used to shovel ore, and pointed out still-barren expanses of dirt and mud.

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就在一个下雨天的下午，我无所事事，寻找哪些东西含有我发现的那些化学物质。

So on one rainy afternoon, I was bored and was looking for something that contained the chemicals I had identified.

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