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- 无脊椎动物缺少脊骨或脊柱的动物，例如昆虫或软体动物
An animal, such as an insect or a mollusk, that lacks a backbone or spinal column.
- 贝壳硬蛋白作为软体动物贝壳有机基质的蛋白质
A protein substance that is the organic basis of mollusk shells.
- 软体动物、昆虫、蠕虫都是无脊椎动物。
Molluscs, insects and worms are all invertebrates.
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