By looking at tree rings, the sun's energy output can be evaluated back as far as.

根据对树木年轮的观测，可以推测太阳的能量输出，甚至回溯到万年前的数据。

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By looking at tree rings, the sun's energy output can be evaluated back as far as 10, 000 years... read more.

根据对树木年轮的观测，可以推测太阳的能量输出，甚至回溯到万年前的数据。

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To gauge precipitation, they looked at tree ring widths in lower-elevation oaks, which grow faster in years with higher levels of rainfall.

而为了测定降水量，他们则对长在低海拔地区的栎树的年轮宽度进行研究，因为这些树在雨水比较充沛的年份长得更快。

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Researchers using satellite images found at least ten percent tree cover on more than one billion hectares of farmland.

VOA: special.2009.09.01

And we're going to do this initially by looking at a straightforward implementation based upon what's called the decision tree.

我们将要做的是看看一种,直截了当的执行方案,这种方案是基于决策树的。

麻省理工公开课 - 计算机科学及编程导论课程节选

It was as if, when we went through this search tree, we never remembered what we got at the bottom, and we just re-computed things over and over.

如果当我们遍历完这棵树，我们不可能，记得我们在最下面得到什么结果,我们只是不断地重复计算，所以这让。

麻省理工公开课 - 计算机科学及编程导论课程节选

During the course of their marathon recording, started in Miami and completed at Tree Studios in Atlanta, the band experimented freely, even collaborating with the Atlanta Symphony on the album.

CNN: Collective Soul makes big changes with latest release

"We believe we saw a large cat looking at a tree... it just sat there looking at us, " he said.

BBC: 'Essex lion was my pet cat Teddy Bear' - owner

The shallows lapped from different directions at the tree as if almost teething on it.

NEWYORKER: Good People