...七大类：包括原生动物、棘皮动物、软体动物、扁形动物、环节动物、腔肠动物、节肢动物等。无脊椎动物举例：孔虫、放射虫、钵水母、珊瑚虫、乌贼及棘皮动物、水螅、一些螺类、蚌类及淡水虾蟹等。拓展资料：无脊椎动物(Invertebrate)是背侧没有脊柱的动物，它们是动物的原始形式。其种类数.
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marine invertebrate 海里的无脊椎动物 ; 海洋无脊椎动物
invertebrate paleontology [古生] 古无脊椎动物学 ; 无脊椎古生物学
invertebrate palaeontology [古生] 无脊椎古生物学 ; [古生] 古无脊椎动物学
Invertebrate Mitochondrion 无脊椎动物线粒体
invertebrate poison 杀软体动物剂
learning in invertebrate 无脊椎动物的学习
Invertebrate biology 无脊椎动物生物学 ; 无脊椎动物学
soil invertebrate 土壤无脊椎动物
benthic invertebrate 底栖无脊椎动物
N-COUNT An invertebrate is a creature that does not have a spine such as an insect, a worm, or an octopus. 无脊椎动物 [技术]
ADJ Invertebrate is also an adjective. 无脊椎的
...invertebrate creatures.
...无脊椎动物。
Most invertebrate species disappeared during a wave of extinctions.
大多数无脊椎动物在一次（物种）灭绝浪潮中消失了。
Increasing salinity caused by the evaporation resulted in the extermination of scores of invertebrate species.
蒸发引起的盐度增加导致了无脊椎动物物种的灭绝。
People aren't even required to seek permits to move plants or invertebrate animals around as long as they are not classified as pests.
人们甚至可以未经许可就对植物或无脊椎动物进行迁移，只要它们未被归类为有害动植物。
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