俩大国在冲突的边沿。
球在窟窿的边沿上停了下来。
他们就像座在火山边沿，这是个非常危险的地方。
They're sitting on a knife's edge, and it's a very hard place to be.
学生们可以在河边沿着蜿蜒、美丽的小径骑车、滑旱冰、跑步。
Students can bike, rollerskate, or run on the beautiful winding path next to the river.
他的钢盔已经掉了，他额上头发的边沿上在流血。
His helmet was off and his forehead was bleeding below the hair line.
他的钢盔已经掉了，他额上头发的边沿上在流血。
His helmet was off and his forehead was bleeding below the hair line.
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