如果没有“第二路径”的努力，可能根本不会有这样的成果。
The offer probably would not have been made at all without Track II efforts.
根本上说，以下性质是等价的，一个向量场是梯度场，等价于积分与路径无关，也等价于向量场是保守的。
And, basically, we say that these properties are equivalent being a gradient field or being path independent or being conservative.
二元经济产生的根本原因在于分工组织及其演进路径的差异。
The basic reason of dual economy lies in the difference between division organization and its evolution path.
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