In 1974 a large area of the surface of Mercury was photographed from varying distances, which revealed a degree of cratering similar to that of the Moon's.
which revealed a degree of cratering similar to that of the Moon's
to reveal a degree of cratering similar to the Moon
revealing a degree of cratering similar to that of the Moon
and revealed cratering similar in degree to the Moon
that revealed cratering similar in degree to that of the Moon
C 现在分词表是与主句自然的因果关系
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