Genetic marking is the equivalent of giving every book a title, table of contents and index-and with much greater speed and accuracy than any librarian could manage.
基因标记相当于给每本书起名，建立内容目录和索引，而且其速度和准确度是任何图书管理员都无法做到的。
None of the points in the table have an accuracy of more than 500 meters.
所有在数据表中的位置信息都没有精度超过500米的。
This method is simple and economical, and the accuracy of table no damage to life.
此法简单经济，对表的精度和寿命均无任何损害。
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