[转载]经纬线与南北回归线等相关英语词汇辑释

原文地址：经纬线与南北回归线等相关英语词汇辑释作者

latitude and longitude:

latitude is an imaginary line joining points on Earth's surface that are all of equal distance north or south of the equator, The latitude of a place is its distance from the equator.

Equator is an imaginary line around the middle of the earth at an equal distance from the North Pole and the South Pole

Longitude/meridian is an imaginary line from the North Pole to the South Pole. Meridians are drawn on maps to help you describe the position of a place; The longitude of a place is its distance to the west or east of a line passing through Greenwich, so all places on the same meridian have the same longitude.

注意在并列南北方向和经纬度时，中西文顺序总是相反的。汉语说南北，全部西文总是说北南 north and south；汉语说经纬，全部西文总是先说纬线 latitude and longitude.不可混淆。

meridian: An imaginary great circle on the earth's surface passing through the North and South geographic poles. All points on the same meridian have the same longitude.
过两极的大圆：一个通过地球表面南北两极的假想线圈。同一子午线上的所有点都具有相同的经度

meridian还有“正午”的释义，因此：AM， antemeridiem上午；PM， postmeridiem下午。

北回归线（Tropic of Cancer）
The parallel of latitude 23°27 north of the equator, the northern boundary of the Torrid Zone, and the most northerly latitude at which the sun can shine directly overhead.
北回归线，夏至线：即北纬23°27的纬线, 位于赤道以北，是热带地区的北边界，太阳垂直照射的最北端

黄赤交角(obliquity of the ecliptic): 黄赤交角是地球公转轨道面（黄道面）与赤道面（天赤道面）的交角，也称为太阳赤纬角或黄赤大距。地球绕太阳公转的黄赤交角为约为23°26'。黄赤交角并非不变的，它一直有微小的变化，但由于变化较小，所以一般忽略不计。

Cancer:
1.A constellation in the Northern Hemisphere near Leo and Gemini.
巨蟹星座：北半球狮子座和双子座附近的一个星座
2.The fourth sign of the zodiac in astrology.
巨蟹宫：占星术中黄道的第四宫

南回归线=Tropic of Capricorn

Capricorn:
1.A constellation in the equatorial region of the Southern Hemisphere, near Aquarius and Sagittarius.
摩羯座：南半球赤道区域的一个星座，在宝瓶座和人马座附近
2.The tenth sign of the zodiac in astrology.
摩羯宫：占星术中的第十宫