我们记得，这是个以单位速度旋转的向量场。
Remember that was the vector field that looked like a rotation at the unit speed.
与向量空间模型相比，该模型的检索速度明显提高。
Comparing with the traditional vector space model, this new model is faster for information retrieval.
与向量空间模型相比，该模型的检索速度明显提高。
Comparing with the traditional vector space model, this new model is faster for information retrieval.
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