backboned英'bæk'bəund美'bæk'bəundBNC¹¹⁴⁰²⁴⁺⁵ 基本例句 adj.有脊骨的³⁷;有脊椎的³⁸;有骨气的²⁵ They have no eyes, no obvious sense organs or brain but there is a head end, tail end and the primitive body plan of backboned animals is established. 他们没有眼睛，没有明显的感觉器官或大脑，但是有头端、尾端和已确认有脊椎动物的初始体平面。 yeeyan