1·The earth is almost 25 000 miles in circumference.
地球的周长大约为25 000英里。
—— 《牛津词典》
2·To translate this formula into an expression, you would use variables to record the radius and circumference.
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。
3·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.
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。
4·To translate this formula into a expression, you would use variables to record the radius and circumference.
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。
5·Eratosthenes calculated the distance to the sun in 200bc, having already deduced the circumference of the Earth.
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。