At least one supernova occurs per decade in our galaxy.
每十年至少有一颗超新星在我们的银河系中出现。
Senator Bill Bradley outlined his own tax cut, giving families $350 in tax credits per child.
参议员比尔·布拉德利简述了自己的减税计划，给家庭中每一个孩子$350税款补助。
Sales of new homes fell by 1.4 per cent in August.
新房的销售量在8月份下降了1.4%。
On average doctors write just over seven prescriptions each year per patient; in Germany it is double.
一个医生平均一年仅为每个病人开大约七个处方；而德国是这个数字的两倍。
It flies using a 23 gallon tank of gas and burns 5 gallons per hour in the air.
它使用一个23加仑的油箱飞行，每小时在空中燃烧5加仑。
There are just two hydrogen atoms per cubic centimeter on average in space, which poses no threat to spaceships traveling at low speeds.
太空中平均每立方厘米只有两个氢原子，这对低速飞行的宇宙飞船不构成威胁。
With fertilizer prices jumping nearly 50% per metric ton over the last year in some places, human waste is an attractive, and often necessary, alternative.
去年，在一些地方，每公吨化肥的价格上涨了近50%，因此人类粪便也就成了一个有吸引力、通常也是必要的替代品。
In these areas, rainfall per month exceeds that in the above definition, so other factors must contribute to savanna formation.
在这些地区，每个月的降雨量超过了上述定义中的量，所以一定有其他因素促成草原的形成。
Coal output per miner in Tribnia is double what it was five years ago, even though no new mines have opened.
尽管没有新煤矿投产，但Tribnia每个矿工的煤炭产量是五年前的两倍。
It can make fine visual distinctions because it is blessed with one million cones per square millimeter in its retina.
它的视网膜上每平方毫米有一百万个视锥细胞，所以它能分辨出很细微的视觉差别。
Today, 28 per cent of graduates in the UK are in non-graduate roles, a percentage which is double the average among the OECD countries.
如今，英国28%的本科毕业生在从事无需本科学历的工作，这一数字是经合组织成员国平均水平的两倍。
In fact, 24 per cent of our galaxy elemental mass consists of helium, which makes it the second most abundant element in our universe.
事实上，银河系中24%的元素质量是由氦组成的，这使它成为宇宙中第二丰富的元素。
If you have to cover 12 chapters in American history, begin by planning on three two-hour reviews with four chapters per session.
如果你必须涵盖美国史的12个章节，首先计划3次2小时的复习，每次4章。
Educational expenditure is often expressed in terms of the amount spent per student.
教育经费通常以用于每个学生的开支表示。
Ethiopia has almost the lowest oil consumption per capita in the world.
埃塞俄比亚有几乎是世界上最低的人均石油消费。
He predicted sales will fall 2 per cent to 6 per cent in the second quarter.
他预计第二季度的销售量将下降2%至6%.
The average yearly increment in productivity was 4.5 per cent.
生产率的年平均增长量是4.5%。
He will get $14 000 a year in per diem to help with the higher costs of living in Washington.
他每年将得到14 000元的日补贴，以弥补华盛顿较高的生活费。
In Japan 99 per cent of all households now have a colour television set.
日本99％的家庭如今都有彩电。
Overall these students rank in the 21st percentile on the tests—that is, they did worse than 79 per cent of all children taking the test.
这些考生的总体百分位排名占第21位。就是说，79%的应试儿童比他们考得好。
The report warns that 200 million poor workers are at risk of joining the ranks of people living on less than two dollars per day in the past three years.
该组织的报告警告说，在过去的三年里2亿贫穷工人面临跨入每天靠不足两美元过活行列的风险。
This spinning motion, at speeds of hundreds of kilometers per second, may cause matter in the disk to take on a spiral shape.
这种以每秒数百公里的速度旋转的运动，可能会使圆盘上的物质呈现出螺旋形状。
3.8 people per 100,000 died in traffic accidents in the UK.
在英国，每10万人中就有3.8人死于交通事故。
This longer life means that in terms of cooling per gram, sulphur in the stratosphere outdoes the lower-down stuff by about 25 to 1.
更长的生存期就意味着就每克的冷却量而言，平流层中的硫比底层的硫多约25倍。
Heart rate tracking for three of the Alaska bears showed a drop from 55 beats per minute on average before hibernation to 14 erratic ones per minute in winter.
对三头阿拉斯加的黑熊的心率追踪显示出它们在冬眠前的平均每分钟55 下降低到了冬天里每分钟飘忽不定的14 下。
Likewise, if we look at fluorine in its diatomic molecule, it is 160 kilojoules per mole.
同样的，如果我们观察二价的氟，它是每摩尔160焦。
It's a scheme that in English counts accents or stresses per line and then arranges them in a pattern.
这种体系里的英文诗每行都有重读，然后将他们按一定模式排列。
I find that just kind of market participants are more to blame than the accounting per se in those examples.
我发现，在这些例子当中市场参与者比会计本身更应该受到责备。
The resulting limit, given in units of bits per second, is the absolute maximum rate of error-free communication given signal strength and noise level.
在给定信号强度和噪声水平的情况下，以比特每秒为单位给出的最终限制是无差错通信的最大绝对速率。
The resulting limit, given in units of bits per second, is the absolute maximum rate of error-free communication given signal strength and noise level.
在给定信号强度和噪声水平的情况下，以比特每秒为单位给出的最终限制是无差错通信的最大绝对速率。
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