吸蟲綱

Class Trematoda / fluke / trematode worm, a parasite incl. on humans

to breathe / to suck in / to absorb / to inhale

trematoda / fluke / trematode worm, approx 6000 species, mostly parasite, incl. on humans

lower form of animal life, including insects, insect larvae, worms and similar creatures / CL:條|条[tiao2],隻|只[zhi1] / (fig.) person with a particular undesirable characteristic

head rope of a fishing net / guiding principle / key link / class (taxonomy) / outline / program