excretory的例句（excretory在句子中的用法）

• an excretory organ of certain invertebrates. 某些无脊椎动物的排泄器官
• Describe the excretory system of the genus Nereis briefly. 简述沙蚕属的排泄系统.
• In the earthworm and many other invertebrates, these excretory structures are called nephridia. 在蚯蚓和许多其它无脊椎动物中, 这些排泄结构称为肾管.
• There are several other excretory mechanisms in earthworms. 蚯蚓有好几种排泄机制.
• Exercise stimulates the digestive and excretory systems... 锻炼能促进消化和排泄系统的活动。