A timeron does not directly equate to any actual elapsed time, but gives a rough relative estimate of the resources (cost) required by the database manager.
timeron不直接等于真正的消耗时间，但是对数据库管理器所需的资源(成本)给出了一个相对粗略的估算。
She was, by one rough estimate, your 10,000th-great-grandmother.
粗略的估计一下，她会是您的第一万代曾祖母。
She was, by one rough estimate, your 10,000th-great-grandmother.
粗略的估计一下，她会是您的第一万代曾祖母。
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