1 half a sphere 半球.
2 any half of the earth, esp as divided by the equator (the Northern/Southern hemisphere) or by a line passing through the poles (the Eastern hemisphere, ie Europe, Africa, Asia, Australia, and the Western hemisphere, ie N and S America) （地球的）半球（尤指按赤道划分之南[北]半球或按通过极地之经线划分之东半球--即欧洲、非洲、亚洲、澳洲和西半球--即南北美洲）. =>illus at globe 见globe插图.
3 (anatomy 解) either half of the cerebrum （大脑 的）半球.
1500-1600; Language: Latin;Origin:
hemisphaerium, from Greek
, from hemi- 'half'
+ sphairion 'small sphere'
a half of the earth, especially one of the halves above and below the equator the Northern hemisphere
one of the two halves of your brain
half of a sphere
(=an object which is round like a ball) >hemispherical
1. When the south pole is towards the sun, the southern half of the world (or the Southern Hemisphere) is warmer, and it has its summer (December, January and February). 当南极斜向太阳时，地球的南半部（南半球）就比较温暖，处于夏季（十二、一、二月）。
2. This country is on the Easten Hemisphere. 这个国家在东半球。
3. So when the north pole tips towards the sun, the northern half of the world (or the Northern Hemisphere) is warmer and has its summer (June, July and August). 所以，当北极斜向太阳时，地球的北半部（北半球）就比较温暖，是夏季（六、七、八月）。