“参考点”、“以……为参考”、“参照物”are usually for coordinates(坐标), time and position changing, eg, 坐标原点为参考点。//以河岸为参考,小船在运动。//在"We had finished before he arrived."这句话中, finish是以过去的动作he arrived为参考的,所以要用过去完成时had finished。在英语时态中要注意时间的参照点。
٢٩ يناير ٢٠١٥
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I feel 基准点 is the best.
٢٩ يناير ٢٠١٥
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参考位置
٢٧ يناير ٢٠١٥
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I think it depents on the situation. It could be translated to 参考内容 in your example I think.