在下面，有一个呈半圆形的大房间。
Down below, there was a large room in the shape of a half circle.
输卵管位于卵巢游离缘外侧，呈半圆形围绕着卵巢，输卵管壶腹部弯曲、峡部直；
Oviduct is located besides of unfix side of ovary that forms a hemicycle around ovary.
只能在射门区内攻进的球才能得分。射门区是对方球门前的一个大致呈半圆形的区域。
It can only be taken from the shooting circle, a roughly semi-circular area in front of the opponents' goal.
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