semicircle半圆 concentric circles同心圆 quadrilateral四边形 pentagon五边形 hexagon六边形 heptagon 七边形 octagon八边形 nonagon九边形 de...
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...r)正方形(Square)长方形(Rectangle)椭圆形(Oval)心形(Heart)八角形(Octagon)三角形(Triangle)半圆形(Semicircle)
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open semicircle 开半圆
SEMICIRCLE PATRN 半圆图案
left semicircle 左半圆
safe semicircle 安全半圈
Semicircle angelfish 叠波盖刺鱼
N-COUNT A semicircle is one half of a circle, or something having the shape of half a circle. 半圆 (形)
They sit cross-legged in a semicircle and share stories.
他们盘着腿围成半圆坐在一起讲故事。
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