名词
中文翻译：半圆石板同义词
同义词：
['semicircle', 'semicircular']
例句：
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1. The architect designed a planum semilunatum for the new building.
建筑师为新建筑设计了一个半圆石板。
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2. The artist painted a planum semilunatum on the wall.
艺术家在墙上画了一块半圆石板。
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3. The engineer used a planum semilunatum to mark the location of the tunnel entrance.
工程师用一块半圆石板标记了隧道入口的位置。