年轻的水手们得到耳环以纪念他们第一次穿越赤道，或者当他们绕过了南美洲最南端上合恩角最险恶的水域的时候。
Earrings were given to young sailors to commemorate their first crossing of the equator, or when they rounded the treacherous waters of Cape Horn, the southernmost tip of south America.
但是XO - 3b的运行轨道却与母星赤道呈异常倾斜的37度角。
But XO-3b orbits with a crazy tilt of 37 degrees from its star's equator.
一个三角双锥体有三个赤道位和两个轴向位。
A trigonal bipyramid has three equatorial and two axial positions.
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