People had to burn these trees to keep warm during harsh winters.
在寒冷的冬天，人们得靠烧这些树保暖。
But people who burn these fuels often breathe in large amounts of smoke.
但是，人们谁这些燃料燃烧往往吸入大量的烟雾。
The idea is to burn these bricks around the edges of fields to keep elephants away.
在农田四周燃烧这种辣椒砖，使大象远离农田。
After taking a look at what 200 food calories looks like a few weeks ago, we thought, what does it look like to burn these calories off?
几周前我们已经看到含200卡的食物是啥样我们想，燃烧这些卡路里又是什么样呢？
But since plants absorb carbon dioxide as they grow, crops grown for biofuels should suck up about as much carbon dioxide as comes out of the tailpipes of cars that burn these fuels.
不过，考虑到植物在生长过程中是会吸收二氧化碳的，因而用于制造生物燃料的植物可以抵消一部分由它们作为汽车燃料而释放的二氧化碳。
These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone.
这些分子燃烧起来比汽油更干净，部分原因是它们的碳-碳键更少（如果有的话），而且它们排放的碳氢化合物不太可能产生臭氧。
These molecules burn more cleanly than gasoline, in part because they have fewer, if and, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone.
这些分子燃烧起来比汽油更清洁，部分原因是它们的碳-碳键更少或者不存在，而且它们排放的碳氢化合物产生臭氧的可能性更小。
These spaceships burn chemical fuels (燃料) and they are very expensive.
这些宇宙飞船燃烧化学燃料，而这些燃料非常昂贵。
In space, however, these rockets are inefficient-they burn through huge quantities of fuel while generating more thrust than necessary.
但是，在太空这些火箭的效率很低——它们通过燃烧大量的燃料，产生了比需要更多的推力。
These fuels give off heat when they burn.
当这些燃料燃烧时释放出热能。
These little kicks will result in a temporary increase in your metabolism, which will help you burn fat a little easier for a bit.
因为这些小球会临时增加你的代谢，代谢可以帮助你燃烧脂肪很容易到位。
With no vultures, these farmers are having to burn or bury the carcasses of fallen cattle—either that, or risk encouraging disease by leaving them to rot.
如果兀鹫灭绝的话，这些农民就只得将死去的牛焚烧或填埋——总会是这些办法，否则让死牛腐烂的话，农民们就可能会感染疾病。
Determined not to give up hope, I began to burn clumsy messages into slices of bread, and slung these desperate distress calls through the window.
下定决心不放弃希望，我开始在面包片上烤上歪歪扭扭的信息，并把这些绝望的求救信抛出窗外。
Another little defect was that these matches could not be got to burn unless there was a light handy to touch them up with.
此外还有一个小小的缺陷，就是这些火柴自己划不出火来，必须另外有火把它们点着。
These are natural rhythms and following these rhythms are important, because if you don't, you will burn out.
遵守这个自然规律很重要，否则，你会精疲力尽。
Both of these are fuels (they burn in air to form carbon dioxide and water, respectively).
这两种产物都是燃料，燃烧之后产物分别是二氧化碳和水。
If these places wish to reduced the impact that burning coal makes on the climate, they must either burn less coal or develop ways of sequestering the carbon dioxide so produced.
如果这些地方希望减少燃煤对气候造成的影响，那他们必须要么减少煤的燃量，要么想出办法隔绝所产生的二氧化碳。
The electrical power grid is particularly vulnerable to these extra currents, which can infiltrate high-voltage transmission lines, causing transformers to overheat and possibly burn out.
相对于这些电流而言，电网极其脆弱。这些电流混入高压传输线引起变压器过热且可能烧毁。
In fact, these underground blazes burn through an estimated 20 million tons of coal a year, the equivalent of the entire coal production of Germany last year.
据估算，实际上这些地下潜燃的火光一年要烧尽约2 000万吨的煤，要知道这可相当于德国去年全国上下总产煤量！
"At least you can burn down his house. With these companies, it is loot and scoot."
“至少你能烧了他的房子。但这些公司，打了劫就跑了。”
"The money lender lives in the community," he said. "At least you can burn down his house. With these companies, it is loot and scoot."
“放贷人住在社区里，”他说。“至少你能烧了他的房子。但这些公司，打了劫就跑了。”
Together these molecules also determine to what extent our fat tissue can continue to expand as we consume more calories than we burn.
在我们机体燃烧超过我们生理需求的卡路里时，所有这些分子也共同决定我们机体的脂肪组织能够继续增加的程度。
If these smokers can afford to 'burn' money while inflations are rising in their countries, they shouldn't be complaining about rising food prices and all that.
如果当这些烟民的国家处在通货膨胀的时候，他们还烧得起“钱”，就不该抱怨食品价格上涨之类的。
A gigabyte of transfer was astronomical ten years ago, but you can burn that by watching a single movie through Netflix these days.
1GB数据传输量在10年前可算是一个天文级别的数字，而今天在网络上看一部电影的数据传输量便可以达到。
Don't burn up these old books. They might be useful.
不要烧掉这些书，它们也许还有用。
These are so that you can burn Ubuntu to a disk in order to install it.
是为了便于你刻录一张u buntu的安装盘。
MethodsVarious psychic reactions of 52 patients with head and face chemical burn were analyzed and mental nursing was taken to these patients.
方法对52例头面部化学烧伤住院患者的各种心理反应进行分析并做好相应的心理护理。
These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds and the hydrocarbons they do emit are less likely to generate ozone.
这些分子要比汽油燃烧得更为清洁，部分是因为他们碳-碳键较少，而且即使会释放出碳氢化合物，也不太可能会成为臭氧。
These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds and the hydrocarbons they do emit are less likely to generate ozone.
这些分子要比汽油燃烧得更为清洁，部分是因为他们碳-碳键较少，而且即使会释放出碳氢化合物，也不太可能会成为臭氧。
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