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词汇	bilateral symmetry
释义	bilateral symmetryn.（名词）bilateral symmetry Symmetrical arrangement, as of an organism or a body part, along a central axis, so that the body is divided into equivalent right and left halves by only one plane.两侧对称：沿一条中轴身体被一平面分为左右同等的两部分的对称排列，如有机体或身体部分
随便看	blood sugar blood test bloodthirsty blood type blood typing blood vessel bloodworm bloody bloodying bloody mary bloody-minded bloody–minded blood–and–guts blood–brain barrier bloom bloom Bloom bloomed bloomer Bloomer bloomers Bloomfield Bloomfield College blooming blooming

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