无足动物

The chitinous internal shell of a squid.

有八肢的头足类动物，无内壳。

Invertebrates ('animals without blood') are insects, crustacea (divided into non-shelled – cephalopods – and shelled) and testacea.

无脊椎动物是昆虫、甲壳纲（分成无壳的—头足类动物—和有壳的）和软体动物。

The biomass of zooplankton changed relatively intensely, especially Cladocera、Copepoda and Young animal, and the biomass of the zooplankton will gradually increase.

随着泥沙的逐渐沉降，浮游动物生物量变化相对激烈，尤其是枝角类、桡足类和无节幼体，水中浮游动物生物量将逐渐增加。

Hill-reservoir has a short retention time; its phytoplankton community was characterized by low abundance and no obviously dominant species. The zooplankton was predominated numerically by rotifer and nauplii.

山地型水库具有较明显的河流特征，浮游植物的种类数和细胞密度均较低，有较多的河流种，无明显优势种；浮游动物的种类和数量很低，以轮虫和桡足类幼体为主。

Eight-armed cephalopod lacking an internal shell.

有八肢的头足类动物，无内壳。

With our frontal vision staring down at them, our sudden, jerky head and hand movements, our heavy-footed gait and the fact that our scent travels 25 feet in all directions on a windless day, most animals will detect us before we ever notice them.

我们正面视野盯着下来，我们突然抖动头部和手部动作，厚重的足步态和事实，我们的气味在无风的旅行每天25英尺的四面八方，大多数动物会发现我们之前就通知他们。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。