Tardigrada

[tɑ:dɪɡ'reɪdə]

解释:

(noun.) in some classifications considered a separate phylum: microscopic arachnid-like invertebrates living in water or damp moss having 4 pairs of legs and instead of a mouth a pair of stylets or needlelike piercing organs connected with the pharynx.

博比编辑--From WordNet

解释:

(a.) A tribe of edentates comprising the sloths. They are noted for the slowness of their movements when on the ground. See Sloth, 3.

(a.) An order of minute aquatic arachnids; -- called also bear animalcules, sloth animalcules, and water bears.

乔琳整理