1.
It is larger than the USA and reaches nearly a quarter of the way round the earth.
它比美国还要大，它的国土的长度几乎达到地球周长的四分之一。
2.
The best of the early measurements of the earth's circumference was made by Eratosthenes.
早期测量地球周长的最准确结果是由埃拉托斯特尼得出的。
3.
The circumference of the earth is almost 25000 miles/The earth is almost 25000 miles in circumference.
地球的圆周长约为25000.
4.
How Long does it take for the earth to go around the sun ?
地球绕太阳一周要多长时间？
5.
Such readings can reveal longer-period deformations in the earth.
这种读数可以反映地球长周期的形变。
6.
" Measurement of circumference and its variation for basketball, football, volleyball and handball"
GB/T14625.5-1995篮球、足球、排球、手球圆周长、圆周差的测量
7.
semimajor axis of ellipsoid
椭球长半轴，地球长半轴
8.
Venus rotates very slowly with the result that its cycle of rotation reaches as long as 243 days of the Earth.
金星的自转极慢，以致金星的自转周期长达二百四十三个地球日。
9.
The earth's circumference is nearly 25,000 miles.
地球的圆周约为25，000 英里。
10.
The earth rotates once every 24 hours.
地球每24小时转一周。
11.
The earth's circumference is about 25,000 miles.
地球的圆周约为25,000英里。
12.
The earth have a core and a mantle around it.
地球的中心是地核，地核的周围是地幔。
13.
The earth has a core and a mantle around it.
地球的中心是地核, 地核的周围是地幔.
14.
An enemy commander announced, "The length of blockade trenches in north China is six times that of the Great Wall, or one-fourth of the circumference of the earth."
据敌酋宣布：“华北封锁沟的长径等于长城的六倍，环绕地球一周的四分之一”。
15.
The moon turns completely around only once during each circuit of the earth.
月球在绕地球转一周的同时，也正好自转了一周。
16.
area with grass cut short surrounding a hole on a golf-course
高尔夫球场上球洞周围剪短的草地
17.
it was decided that the ball should be 81 centimeters around and weigh 500 grams.
决定用周长为81厘米，重五百克的球。
18.
They are: the ultra-long-period tectonic weves which are synthetical tectonic results in different earth history;
它们是：表现为地球不同年代的综合构造运动结果的超长周期构造波；