prime meridian

Prime meridian ( line of longitude which passes through Greenwich near London, numbered zero, from which the other lines of longitude are calculated)

本初子午线（通过伦敦附近之格林尼治的经线，度数为零，是计算东西经度的起点）。

So the martian prime meridian, the equivalent of the Greenwich, UK, prime meridian on Earth, has been set to run through this region.

因此，火星本初子午线，在格林威治，英国，地球上的本初子午线，相等于已被设置为贯穿这一地区。

By agreement, the longitude passing through Greenwich of Observatory is called the prime meridian.

按照约定, 经过伦敦格林尼治天文台的经线被称为本初子午线(零度经线).

ROBIN CATCHPOLE, GREENWICH ROYAL OBSERVATORY Yes this is the... is the prime meridian if you like. The line that separates the eastern hemisphere from the western hemisphere.

罗宾•卡奇普尔，格林威治皇家天文台是的，这就是本初子午线，它把地球分为东半球和西半球。

Yes this is the* is the prime meridian if you like.

是的，这就是本初子午线，它把地球分为东半球和西半球。