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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	attempts attend attendance attendances attendant attendants attended attendee attendees attending attending attends attention attention deficit disorder attention deficit hyperactivity disorder attentions attention span attentive attenuate attenuated attenuates attenuating attenuator attenuators attest

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