第三种方法，可能比另外两个要快得多是使用语义纹元林(PDF)。
A third approach that is probably much faster than the other two is using semantic texton forests (PDF).
李洪升、朱元林，冻土断裂力学及其应用，北京：海洋出版社，2002。
Li Hongsheng, Zhu Yuanlin, Fracture Mechanics of Frozen Soil and Its Application, China Ocean Press, 2002.
林登实验室采取措施控制《第二人生》中的兑换率，使其相对稳定在265林登元兑换1美元。
Linden Lab USES several controls to keep the exchange rate in Second Life relatively stable at about 265 to the us dollar.
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