大部分在古生代岩层中发现的化石都是没有脊骨的无脊椎动物，例如珊瑚、软体动物和三叶虫。
Most of the fossils seen in Paleozoic rocks are invertebrate animals lacking backbones, such as corals, mollusks and trilobites.
其余部分落入无脊椎动物嘴中：脉动式水母、刺虾、珊瑚虫群、海底的爬行动物和潜在泥中的动物。
The rest falls to the invertebrates: pulsing jelly fish, darting shrimp, fixed colonies5 of coral polyps, and crawlers and diggers of the floor.
在南非勘察某自然保护区的一个科学家小组，发现了以前从未有记录的十八个无脊椎动物物种，其中包括有蜘蛛、蜗牛、千足虫、蚯蚓以及蜈蚣。
Scientists surveying a nature reserve in South Africa have discovered 18 previously unrecorded species of invertebrates, including spiders, snails, millipedes, earthworms and centipedes.
寄生虫载体，是节肢动物或其他无脊椎动物传播寄生虫从一个脊椎动物宿主到另一个。
A parasite vector is an arthropod or other invertebrate that transmits the parasite from one vertebrate host to another.
本剂含有维生素、微量元素、脂肪和氨基酸等营养成分，能激发珊瑚、海葵、管虫和其他软体无脊椎生物的进食。
A mixture of vitamins, nutrients, trace elements, trace elements, lipids and amino acids which arouse feeding behaviour in corals, anemones, tube worms and other benthic Marine invertebrates.
无脊椎动物，如软体虫，是这些水鸟的主要食物。
Invertebrates, such as worms, are the main diet of these water birds.
无脊椎动物，如软体虫，是这些水鸟的主要食物。
Invertebrates, such as worms, are the main diet of these water birds.
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