Cetacea
/sɪˈteɪʃə/- Zoology an order of marine mammals that comprises the whales, dolphins, and porpoises. These have a streamlined hairless body, no hindlimbs, a horizontal tail fin, and a blowhole on top of the head for breathing.【动】鲸目。参见
M YSTICETI, ODONTOCETI.
派生词
cetacean
noun & adjective词源
modern Latin (plural), from Latin cetus, from Greek kētos 'whale'.