地球的周长大约为25 000英里。
这棵树周长6英尺。
要将这个公式转换为一个表达式，你需要使用变量来记录半径及周长。
To translate this formula into an expression, you would use variables to record the radius and circumference.
他们发现自己被包围了，而巴黎的面积相当于当时或其他任何时候伦敦的三分之一，但它的周长很大。
They find themselves surrounded, and Paris is one-third the size of London at this same time, or at any other time, but it has a huge circumference.
这座形状奇特的美丽湖泊周长约一万五千英尺。
This beautiful and curiously shaped lake lies at around fifteen thousand feet.
阿特拉斯是两者中较平整的一个，极点间的直径只有18公里，但它的赤道周长却有40公里。
Atlas, the flatter of the two, has a diameter of only 18 kilometers from pole to pole but is almost 40 kilometers across its waist.
进化论的作者、年轻的英国植物学家查尔斯·达尔文，是第一个看到落叶柏树干圆周长达一百三十英尺的欧洲人。
A young English botanist named Charles Darwin, the author of the theory of evolution, was the first European to see alerces, with trunks that had a circumference of 130 feet.
给定周长寻找直角三角形。
其次通过测量评估手腕周长。
圆的解决方案区，弧，周长，列和视锥。
Circular solutions for Area, Arc, Circumference, Column and Cones.
pai是一个数学常量，代表圆周长跟直径的比值。
It's a mathematical constant representing the ratio of any circle's circumference to its diameter.
第二个测试(计算周长为10)，与前面的方法相似。
The second test (calculate the perimeter as 10 units) works in a similar way.
另一个忙碌的一周长假是中国的传统节日春节。
Another busy weeklong holiday is the Spring Festival, or the traditional Chinese New Year.
研究小组在此地圈定了一个周长，开始着手清理这块区域。
The team set up a perimeter and began sweeping the area clean.
要将这个公式转换为表达式，你需要使用变量来记录半径及周长。
To translate this formula into a expression, you would use variables to record the radius and circumference.
其中一棵杉树，据测有7200年的树龄，树身周长1***米。
The oldest Yakusugi is 7200 years old and the perimeter of its trunk is 1*** meters.
我喜欢能在我一周长时间上班之后帮我放松的悦耳的音乐。
I like smooth music that helps me relax after a long week at work.
马洛尼说，安慰剂组的周长减少是典型的安慰剂反应的反映。
Maloney says the reduction in the placebo group is a reflection of thetypical placebo response.
那是因为，至少在圆周长度方面，我们星球上的一些地方比其他的要大。
That's because some parts of the planet are much bigger than others, at least in circumference.
答案是否定的。请记住，我们谈论的周长是在分子的尺度上。
Remember, the girth we're talking about is on the molecular scale.
将大头针去掉，沿周长在离边缘1.5cm处缝一周，如图A。
Remove the pins, then stitch all around the perimeter, 1.5cm from the edge, as marked in figure A.
蓝旗用来显示发掘地的周长，而黄旗用来标明发掘出化石或石制工具的地点。
Blue flags define the excavation perimeter, while yellow ones mark the location of fossils or stone tools.
它的周长有27公里(约合17英里)，身处地下，横跨法国和瑞士两国。
It has a circumference of 27 km (17 miles) and lies underground, straddling French and Swiss territory.
有趣的是，当我们测量心脏的，输出量时，我们需要测量30种不同的周长。
It's interesting to know that when we measure the output of the heart, there is about 30 different perimeters that are measured.
公元前200年，埃拉托色尼在计算地球到太阳的距离时，已经推算出地球的周长。
Eratosthenes calculated the distance to the sun in 200bc, having already deduced the circumference of the Earth.
线速度，在这个例子里，就是速率，是这个圆环的周长，除以走一圈，需要的秒数。
And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.
线速度，在这个例子里，就是速率，是这个圆环的周长，除以走一圈，需要的秒数。
And that linear velocity, which, in this case, is really your speed, is of course the circumference of the circle divided by how many seconds it takes to go around.
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