semi·dome /ˈsɛmiˌdom, ˈsɛˌmaɪ, mɪ-/
半圓形屋頂
Sem·i·dome n. Arch. A roof or ceiling covering a semicircular room or recess, or one of nearly that shape, as the apse of a church, a niche, or the like. It is approximately the quarter of a hollow sphere.
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