十几年后，这种甲壳纲动物将长到拖拉机轮胎大小。
After a dozen years, the crustacean will grow to the size of a tractor tire.
这些甲壳纲动物是某些鱼类重要的食物来源。
These crustaceans provide a valuable food source for some fish.
小龙虾和虾或龙虾一样，在科学上属于甲壳纲动物。
Crawfish, like shrimp or lobsters, belong to the scientific class Crustacea.
小龙虾和虾或龙虾一样，在科学上属于甲壳纲动物。
Crawfish, like shrimp or lobsters, belong to the scientific Crustacea.
研究者在俄克拉荷马采石场的页岩层发现这些70毫米的甲壳纲动物。
Researchers found the 70-millimeter crustacean in the dark shale of an Oklahoma quarry.
巨型等足目动物与虾和蟹有关，是以海底为家的深海甲壳纲动物。
Related to shrimp and crabs, the giant isopod is a deep-sea crustacean that makes its home on the ocean floor.
昆虫和甲壳纲动物产生的类固醇激素，以促进生长，控制蜕皮。
A steroid hormone produced by insects and crustaceans that promotes growth and controls molting.
图片中的蓝色部分是一个等足类动物---一种小型的甲壳纲动物。
海洋生物的骨骼残骸，比如软体动物、甲壳纲动物、有孔虫类使得海滩成为珍珠的白色。
These skeletal remains from creatures such as molluscs, crustacean and foraminifera create a pearly white sand beach.
研究者们在墨西哥海湾的密西西比峡谷里发现了微小甲壳纲动物的寄居地毯。
Researchers found a carpet of small crustaceans inhabiting the head of the Mississippi Canyon in the Gulf of Mexico.
异脚类，端足目动物异脚类的一种小甲壳纲动物，如滨海的水蚤，体侧扁，无甲壳。
A small crustacean of the order amphipoda such as the beach flea having a laterally compressed body with no carapace.
这种甲壳纲动物将幼虫放在樽海鞘桶中，这种现象被称为demarsupiation。
The crustacean deposits its young on the salp barrel, in a phenomenon called demarsupiation.
软体动物，甲壳纲动物，甚至珊瑚藻都需在其身体结构生长中用上钙，而海水酸度变高则会阻碍这一过程。
Mollusks, crustaceans, and even coralline algae are among theliving things that use calcium in their structures, a process that could beimpeded by higher acidity levels in seawater.
这个游动的小型甲壳纲动物名叫Phronimasedentaria，它们居住在樽海鞘的“桶状”尸体空壳中。
The roving Phronima sedentaria, a small crustacean, inhabits the hollowed-out bodies of dead barrel-shaped organisms called salps.
在这项研究中，唯一变简单的甲壳纲动物不是寄生物，就是那些生活在偏远栖息地的生物，比如说在与世隔绝的海蚀壁龛里。
In this study, the only crustaceans that became simpler were either parasites or those living in remote habitats, such as isolated Marine caves.
飞鱼吃浮游生物和小甲壳纲的动物。
桡足动物任一种桡足亚纲的大量海洋或淡水甲壳纲小动物，身体细长，尾部分叉。
Any of numerous minute Marine and freshwater crustaceans of the subclass Copepoda, having an elongated body and a forked tail.
这种新的甲壳动物是桨足纲中的一员，研究人员认为桨足纲动物是地球上最古老的甲壳类动物的群体之一。
The new crustacean is a member of the class Remipedia, which researchers think is one of the oldest groups of crustaceans on Earth.
这种新的甲壳动物是桨足纲中的一员，研究人员认为桨足纲动物是地球上最古老的甲壳类动物的群体之一。
The new crustacean is a member of the class Remipedia, which researchers think is one of the oldest groups of crustaceans on Earth.
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