The equator is an imaginary line around the middle of the earth at an equal distance from the North Pole and the South Pole.
an orbit 22,000 miles above the Earth's equator.
距地球赤道上方22000英里的一个轨道。
Sarawak straddles the Equator and is hot and humid.
沙捞越横跨赤道,气候闷热潮湿。
the vernal and autumnal equinox, when the sun crosses the equator travelling north and south.
春分和秋分,是太阳从南到北和从北到南跨过赤道之时。