Yuán qióng de wūdǐng ràng dàtīng xiǎnde géwài zhuāngyán.
The domed roof gave the hall a particularly solemn feel.
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Highly literary on its own. In modern Chinese you'll mostly see it in compounds: 苍穹 (cāngqióng, vault of heaven), 穹顶 (qióngdǐng, dome), 穹窿 (qiónglóng, vault/dome shape).
memory
穴 (cave) on top of 弓 (bow) — a bow-shaped cave overhead, i.e. the dome of the sky.
