7 The strobila of cestodes consists of a chain of segments (proglottids) budded off from the neck region.
绦虫的节裂由从颈部殖的体节链(节片)成。
In the embryo an undifferentiated mesodermal component of an early trunk or tail segment or metamere, derived from paraxial mesoderm.
在胚胎时,一个法别的中胚层成一个早期躯干、或尾部片段或体节,衍自轴旁的中胚层。
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Like these two animals, its body is made up of a number of rings.
跟龙虾和虾一样,螃蟹的体也是很多体节组成的。
And metanephridia will have a nephrostome on onside of a segment.
后肾管在体节的一侧具有肾口。
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