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1.The petrosquamosal sulcus is a unique feature of the area's geology.
这个特殊的地质特征是该地区独有的。
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2. The discovery of this petrosquamosal sulcus has sparked excitement among scientists.
这一发现激发了科学家的热情。
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3. The petrosquamosal sulcus is believed to have formed millions of years ago due to tectonic activity.
据信,这个特殊的地质结构是在数百万年前由地壳运动形成的。