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单词 Sea spider
释义

Sea spider

原声例句
当月 CNN 10 学生英语

Giant sea spider, Japanese spider crab, giant squid, or Lion's Mane Jellyfish?

巨型海蜘蛛、日本蜘蛛蟹、巨型乌贼还是狮鬃水母?

PBS地球-动物趣闻

And in the seas there are the sea spiders and the primordial-looking horseshoe crabs -- living reminders of the watery origin of the chelicerates and the reign of the sea scorpions.

海洋中有海蜘蛛和长相原始的马蹄蟹——活生生地提醒着螯虾的水源起源和海蝎的统治。

中文百科

海蜘蛛

Anatomía externa del macho de Nymphon rubrum según Sars (1895).[1]
 A. Céfalon. B. Tronco. C. Abdomen. 1. Probóscide. 2. Quelíforos. 3. Pedipalpos. 4. Ovígeros. 5. Huevos. 6. Patas locomotoras. (Los colores son un artificio para la distinción de las regiones.)
Anatomy of a pycnogonid: A: head; B: thorax; C: abdomen 1: proboscis; 2: chelifores; 3: palps; 4: ovigers; 5: egg sacs; 6a–6d: four pairs of legs
Pycnogonid grazing on a hydroid

海蜘蛛,是节肢动物海蜘蛛纲海蜘蛛目的总称,因形似蜘蛛,故名。

  • 体长5-6毫米,褐色或淡黄色;
  • 头胸部前端有口,上面有4个小隆起,上面有单眼;
  • 腹部不发达,为一小突起;
  • 头胸部有4对长足,末端有钩爪,前方有一对小螯肢。
英语百科

Sea spider 海蜘蛛

Anatomy of a pycnogonid: A: head; B: thorax; C: abdomen 1: proboscis; 2: chelifores; 3: palps; 4: ovigers; 5: egg sacs; 6a–6d: four pairs of legs
Pycnogonid grazing on a hydroid
A pycnogonid in its natural habitat

Sea spiders, also called Pantopoda or pycnogonids, ('pycno-' closely packed, 'gonid' gonidia) are marine arthropods of class Pycnogonida. They are cosmopolitan, found especially in the Mediterranean and Caribbean Seas, as well as the Arctic and Antarctic Oceans. There are over 1300 known species, ranging in size from 1 millimetre (0.039 in) to over 90 cm (35 in) in some deep water species. Most are toward the smaller end of this range in relatively shallow depths, however, they can grow to be quite large in Antarctic waters.

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更新时间:2025/6/19 17:51:45