ecliptic
/ɪˈklɪptɪk/
the great circle representing the apparent annual path of the sun; the plane of the Earth's orbit around the sun; makes an angle of about 23 degrees with the equator
中文释义：黄道
The planets orbit the sun in a plane close to the ecliptic.
行星在接近黄道的平面上绕太阳运行。
The ecliptic is tilted at about 23.5 degrees relative to the celestial equator.
黄道相对于天赤道倾斜约23.5度。