It covers the moon's leading hemisphere - the side that faces forward as it moves in its orbit - which suggests that the black material has been swept up from space as the moon moves around Saturn.
土卫八较暗的一面实在是非常的黑暗，它覆盖着土卫八正对公转的半球被认为在绕土星公转时被宇宙空间扫除了一些黑色的物质，所以它只是表面的一层不足一米的薄层。
The team studied people who had suffered a left-sided stroke, which had damaged speech areas in the brain's left hemisphere, leading to difficulties speaking.
小组研究的人群是一些遭受左脑中风的人，他们大脑左半球的言语区遭到破坏，导致他们说话困难。
Thee team studied people who had suffered a left-sided stroke, which had damaged speech areas in the brain's left hemisphere, leading to difficulties speaking.
小组研究的人群是一些遭受左脑中风的人，他们大脑左半球的言语区遭到破坏，导致他们说话困难。
I have met with the leading women of the Western Hemisphere who are working every day to promote literacy and better health care for children in their countries.
我曾接触过西半球的杰出女性，她们每天都在为推进本国儿童的文化水平和使之得到更好的卫生保健而努力。
I have met with the leading women of the Western Hemisphere who are working every day to promote literacy and better health care for the children of their countries.
我见到了西半球的主流妇女们，她们每天都致力于为她们的国家推广扫盲和更好的儿童健康护理的工作。
Swelling of the left cerebral hemisphere has produced a shift with herniation of the uncus of the hippocampus through the tentorium, leading to the groove seen at the white arrow.
左大脑半球肿胀通过小脑幕形成海马钩回疝和正中线偏移，从而出现此处白色箭头所示的沟。
Swelling of the left cerebral hemisphere has produced a shift with herniation of the uncus of the hippocampus through the tentorium, leading to the groove seen at the white arrow.
左大脑半球肿胀通过小脑幕形成海马钩回疝和正中线偏移，从而出现此处白色箭头所示的沟。
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