求翻译：1.全球正在处于温暖期。 　　2.地球周期性公转轨迹变动 　　地球周期性公转轨迹由椭圆形变为圆形轨迹，距离太阳更近。根据某科学家的研究地球的温度曾经出现过高温和低温的交替，是有一定的规律性的。是什么意思？

A world is in a warm period. Earth cyclical revolution track changes in Earth's cyclical revolution trajectory into a circular trajectory by the oval from the sun is closer. A scientists study the Earth's temperature has alternately too high moderate low temperature, there is a certain regularity.

1.Global is a warm period. 2.The Periodic orbits the earth track changes periodically by Mischa Maisky track oval to circular track, and distance from sun. According to some scientists in the study of the earth's temperature have been alternating the high temperature and low temperature, there is a

1. whole world are being in the warm time. 　　2. Earth periodic revolution path changes 　　The Earth periodic revolution path becomes the circular path by the ellipse, is away from the sun to be nearer.Studied Earth's temperature according to some scientist to appear high temperature and low temperatu

1. the world is in a warm period. 2. the periodic cyclical changes in orbital trajectory of the Earth the Earth orbital trajectories from elliptical to circular trajectory, closer from the Sun. According to some scientists study the Earth's temperature has seen alternating high and low temperature,

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