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。
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。
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。
A goat was standing up against a tree on its hind legs, trying to get at the leaves.
一只山羊后腿趴在一棵树上站起来，试图去够树叶。
He took up his bow, and down fell the thrush into the bushes at the foot of the tree.
他拿起他的弓，那只画眉鸟就落在树脚的灌木丛中。
Why protect chlorophyll at a time when the tree is breaking it down to salvage as much of it as possible?
在树木将叶绿素分解，以尽可能多地将其回收的时候，为什么我们还要保护叶绿素呢？
There stands an old tree, cut it down, and you will find something at the roots.
那儿有一棵老树，把它砍倒，你会在树根那里找到一样东西的。
There is still no universally agreed-on explanation for why there should be such a dramatic cessation of tree growth at the upper timberline.
对于为什么树线以上的树木会突然停止生长，至今还没有一个公认的解释。
Other supplies at the base, which was abandoned in 2003, included Christmas ornaments, and the crew members put them up on a small tree inside their quarters.
2003年被遗弃在基地里的其他物资中包括圣诞装饰品，船员们把它们挂在了他们营地里的一棵小树上。
Dickon looked across the grass at the tree and Mary looked and there was a brief moment of stillness.
狄肯隔着草地望着那棵树，玛丽也望着，然后是短暂的寂静。
Tom, if we'd 'a' left the blame tools at the dead tree, we'd 'a' got the money.
汤姆，要是我们把那些该死的工具留在那棵枯树上，我们就能拿到钱了。
He stood silent at the foot of the tree looking across the chamber at his enemy.
他默默地站在树下，望着房间对面的敌人。
At least once a fortnight a corps of caterers came down with several hundred feet of canvas and enough colored lights to make a Christmas tree of Gatsby's enormous garden.
至少每隔两周，一群餐饮服务商就把几百英尺的帆布和足够多的彩色灯带到花园里，在盖茨比的巨大花园里布置圣诞树。
When we are looking at the life of a tree, we learn about that each period of life brings its own form of joy and challenge.
当我们观察一棵树的生命时，我们了解到生命的每一个阶段都有它自己的欢乐和挑战。
He sent them to go and look at a pear tree that was far away in turn.
他派他们轮流去看一棵很远的梨树。
If I plant the tree in one of my field, my neighbors may come at night and steal the apples.
如果我把树栽在自己的一块地里，邻居们夜里就可能会来偷苹果。
If he planted the tree in one of his fields, his neighbors would come at night and steal the apples.
如果他把树栽在自己的一块地里，夜里他的邻居们就会来偷苹果。
The king became very angry at this, and ordered the gardener to keep watch all night under the tree.
国王变得非常生气，命令园丁整夜在树下看守。
If he planted the tree in one of his fields, his neighbors would come at night and steal some of the apples.
如果他把苹果树栽在自己的一块地里，邻居们就会在夜里来偷苹果。
If I had planted the tree in one of my fields, my neighbors would have come at night and stolen some of the apples.
我把树栽在自己的一块地里，邻居们夜里就会来偷苹果。
The fairies are to put it high up among the tree tops where they sleep at nights.
仙子们要把它放在高高的树梢上，那是他们晚上睡觉的地方。
The ants also eat yellow structures at the tip of leaflets: these are protein rich and seem to have no function for the tree except to attract ants.
蚂蚁还吃嫩叶顶端的黄色结构：这些结构富含蛋白质，除了吸引蚂蚁外似乎对树没有作用。
The ants also eat yellow structures at the tip of leaflets: these are protein-rich and seem to have no function for the tree except to attract ants.
蚂蚁还吃小叶顶端的黄色组织：这些结构富含蛋白质，除了吸引蚂蚁外，似乎对树没有任何其他作用。
The aim is to reverse the decline in the number of tree species or at least to preserve the "genetic material" of all of them.
其目的是扭转树种数量下降的趋势，或至少保存所有树种的“遗传物质”。
"Now pull that one out." said the old man, looking at a small tree.
“现在把那棵拔出来。”老人看着一棵小树说。
He weighed the pot, the dry soil and the tree at the start of his test.
在测试开始时，他称了罐子、干土和树木的重量。
There are also Emergency Tree Care Volunteers at the FUF.
“城市森林之友”（FUF）也有“紧急树木护理志愿者”。
At last, the man in the tree got angry and shouted to his friend, "How foolish you are!"
最后，树上的男人生气了，对他的朋友喊道：“你真蠢！”
The Tree did not rejoice at all; he grew and grew, and was green both winter and summer.
枞树一点也不高兴；他越长越大，冬天和夏天都是绿色的。
I smelt the flowers, looked at the birds, and yeah, I picked many tree leaves.
我闻了闻花，看了看鸟，还摘了很多树叶。
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