和动物花粉转运系统一样，植物的花囊也发生了惊人的改变，有的从管状和槽状变形为瓣膜状、刷状和刺状。
Flower receptacles, like the animals' transport systems, are wonderfully varied, from tubes and gullets to flaps, brushes, and spurs.
海蜇的蛰刺实际上来自海蜇体上微小的刺丝囊刺细胞。
The jellyfish sting actually comes from tiny nematocysts on the jellyfish body.
放射状对称的动物，囊状身体覆有刺样结构的触须，只有一个开口；它们以珊瑚和水母的形式出现。
Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.
放射状对称的动物，囊状身体覆有刺样结构的触须，只有一个开口；它们以珊瑚和水母的形式出现。
Radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms.
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