底栖生物

benthos

(equivalent to 的 as possessive particle)

background / bottom / base / end (of the month, year etc) / remnants / (math.) radix / base

to perch / to rest (of birds) / to dwell / to live / to stay

to be born / to give birth / life / to grow / raw / uncooked / student

organism / living creature / life form / biological / CL:個|个[ge4]

thing / object / matter / abbr. for physics 物理