By comparing rings from different trees and with other historical data, you can often identify particular rings with the exact calendar year that they grew.

VOA: standard.2010.04.05

Now, it seems to me we can eliminate that a little bit by comparing it with various modern approaches to the same sorts of problems.

如今,在死亡的问题上,我们已经通过,与现代多种同类方法和问题的对比,解决一些了

耶鲁公开课 - 古希腊历史简介课程节选

Now, it seems to me we can eliminate that a little bit by comparing it with various modern approaches to the same sorts of problems.

如今,在死亡的问题上,我们已经通过,与现代多种同类方法和问题的对比,解决一些了

耶鲁公开课 - 古希腊历史简介课程节选