The scientists say the theory may explain a long-standing mystery: strange dark spots, fanlike structures, and spidery patterns that appear near Mars's southern pole every year. 科学家们说这个理论可以解释一个长久以来的谜团:奇怪的火星黑斑,扇状结构和每年出现在火星南极附件的蜘蛛状图案。
fanlike
[ adj ] resembling a fan <adj.all>
Fanlike \Fan"like`\, a. Resembling a fan; -- specifically (Bot.), folded up like a fan, as certain leaves; plicate.