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It is an organ of perennation or vegetative propagation, and is characteristic of various water plants (e.g.Sagittaria).

这是多年营养繁殖器官,还是多种的特征之一(例如:Sagittaria)。

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Quillworts are heterosporous, mainly aquatic perennials, with a dense rosette of tubular quill-like leaves arising from a short, stout rootstock.

韭目的型孢子,是多年。其管状条形叶密集于粗短的根茎之上。

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The result indicates that great differences,which have significant influence on the aqua-plants,exist in the evapotranspire,the bio-mass,the root density and the root length.

研究的结果表明,不同的蒸散量、物量、根密度和根长存在较大的差,这些差的泌氧性能、碎石床人工湿地的力负荷率、氮磷去除效果和有机污染物的降解有重要的影响。

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In any navigation channel, the following activities are prohibited: abandoning sunken vessels, laying fishing implements impedimental to navigation, and cultivating aquatic plants.

在航道内不得弃置沉船,不得设置碍航渔,不得种

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BBC 纪录片《中国老师来了》

Water plants prevent light reaching the plants at the bottom.

会阻碍水底吸收阳光。

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VOA常速英语_科技

The startup CO2BIO is also looking at an aquatic plant as fish feed.

初创公司CO2BIO也将作为鱼饲料。

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我们星球的秘密

Grass and aquatic vegetation into food.

把草和转化为食

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哈利火焰杯

Magical Water Plants of the Mediterranean.

《地中海神奇和它们的性》。

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高中新人教必修一课文 文字+音频可单句重复

Both the island and the Uros homes are made of water plants from the lake.

岛屿和乌鲁斯人的住宅均由湖中的制成。

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哈利火焰杯

He held up the book: Magical Mediterranean Water Plants and Their Properties.

《地中海神奇和它们的性》。

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吹小的天鹅

When daylight came, he would swim ashore and eat a light breakfast of water plants.

天刚破晓,他就游到岸边,简单地吃了点当早餐。

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北欧野风情录

Excellent swimmers despite their bulk, they can take their pick of succulent aquatic plants.

游泳健将不会在意自己的大块头,它们可以轻易取食多汁的

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少儿畅学课堂

The seagrass and aquatic plants that manatees eat are frequently covered in sand, which wears down their teeth.

海牛吃的海草和频繁地被沙子覆盖,这些沙子很容易磨损它们的牙齿。

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少儿畅学课堂

They eat leaves, twigs, and the inner bark of deciduous trees, as well as shrubs, aquatic plants, and grasses.

它们吃叶子,嫩枝和落叶性树木的内层树皮,还有灌木、、草等。

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Amazing China 纪录片(视频版)

The various aquatic plants and hynobius salamanders in the colorful pond bring endless vitality to this ancient geological wonder.

五色彩池里的各类和畅游的羌活鱼给这片古老的地质奇观带来了无限的机。

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吹小的天鹅

Then she glided over to a shallow place, thrust her head underwater, and pulled up tender greens from the bottom.

接着,她游到了一个水浅的地方,把头伸到水下,从水底叼出一些柔嫩的

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遇见你之前 | Me Before You

His mates swayed gently around him like aquatic plants.

他的伙伴们像一样在他身边轻轻摇摆。

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假如有如果

And once the aquatic plants are gone, the fish, shellfish and other marine animals that eat them would follow closely behind.

一旦死去,靠这些的鱼类,贝类和其他海洋动会跟着死去。

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少儿畅学课堂

Moose are also excellent swimmers—even the calves, or baby moose, can swim—and will wade into marshy areas to eat aquatic plants.

驼鹿也是优秀的游泳健将,即使是幼崽,或者是小驼鹿都会游泳,它们会为了吃涉水游向湿地。

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假如有如果

Large masses of algae can block out the sunlight for smaller organisms living near or under it, causing aquatic plants to die.

大量的海藻会阻挡阳光照射到活在它旁边或是下面的小,从而造成的死亡。

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PBS地球-动趣闻

And aquatic plants don't have that, because they don't need it in their environment, which tends to be less harsh.

则没有, 因为它们在环境中不需要它,环境往往不那么严酷。

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Crash Course 学篇

Small fish often use aquatic vegetation, like pondweeds or wild celery, to form habitats where they hide from predators and safely lay their eggs.

小鱼经常使用——如池塘草或野芹菜——来形成栖息地,在那里它们可以躲避捕食者,安全地产卵。

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科普

As for the " horrible hands" themselves, recent research suggests that they were adaptations for digging up plant matter or raking in aquatic vegetation.

至于“可怕的手”本身,最近的研究表明,它们适应于挖掘质或耙

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PBS地球-动趣闻

And they could tell they came from land plants, and not aquatic plants, because the spores had a thick covering that all land plant spores have today.

他们可以看出它们来自陆,而不是, 因为孢子有一层厚厚的覆盖, 今天所有的陆孢子都有。

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