線形動物: nematode

system, family / style

an ecosystem (system of an ecological community and its environment)

roundworm, nematode, member of the phylum Nematoda.

舟形, 船形: boat-shaped / 線形, 線型: (mathematics) being linear; straight alignment / 戦型, 戦形: combat style, playing style / 船型: design of a ship / 扇形: fan-shaped / 線径: wire diameter

軟体動物: a mollusc (soft-bodied invertebrate of phylum Mollusca)

body / physique, constitution, frame / health

lo and behold

to get a big surprise; to be astonished

to be astonished, surprised, amazed, startled