onion dome 洋葱形圆顶 ; 洋葱形屋顶 ; 圆顶
It formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
它也是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层形成的。
Although it resembles an impact crater, it formed when a volcanic dome hardened and gradually eroded, exposing the onion-like layers of rock.
尽管它看起来像是一个陨石撞击坑，它是在一个火山穹丘硬化和逐步侵蚀中，剥离出洋葱状岩石层的结果。
We get a good view of the capital's 13th-century city walls and turrets and the onion-shaped dome of the Alexander Nevsky Russian Orthodox church as we drive in along the coast road.
我们沿着海边公路驱车进城时，观赏到了首都建于十三世纪的城墙和角楼，还有洋葱形圆顶的亚历山大·奈夫斯基俄罗斯东正教堂。
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