Earth has been a cradle for life because of its position relative to the Sun.
由于地球与太阳的相对位置，地球一直是生命的摇篮。
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Earth has been able to support life because its position relative to the Sun provided it with enough heat, but not too much heat for early bacteria to evolve.
Whether it's a decision-making session, a basketball game, or a family outing, they can't help grabbing the lead dog position and clinging on to it for dear life.