Something that is ghostly seems unreal or unnatural and may be frightening because of this. 怪异得令人可怕的
adjective [原级]幽灵的;可怕的;影子似的
X-ray examination of thin slabs of rock sometimes reveals the ghostly outlines of tentacles, digestive tracts, and visual organs of a variety of marine creatures. 对岩石薄片的 X 射线检查有时会发现可怕的触角轮廓、消化道和很多种海洋生物的视觉器官。