表面因长年不断地滴水而成坑凹。
稍稍能安慰我们的，是在那石上有一个不大不小的坑凹儿，雨天就盛满了水。
The only happy thing was a small pit on top of it, which would be filled with water after rain.
稍稍能安慰我们的，是在那石上有一个不大不小的坑凹儿，雨天就盛满了水。
The only thing that had interested us in the ugly stone was a little pit on to P of it，which was filled with water on rainy days.
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