三块石水库与旁边紧紧相连的蒋家水库相依在群山之间，被称为“姊妹湖”。

The Three-Stone Reservoir and the Jiangjia Reservoir are in close vicinity among the mountains. Hence the name "Two Sisters Lake".

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我还记得在我帮他弄到石锤后，星期天的时候，我看着他走过运动场，因为和姊妹的冲突而鼻青眼肿的。

I remembered the Sunday after I had gotten him the rock-hammer. I remember watching him walk across the exercise yard, his face puffy from his latest go-round with the sisters.

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