the inside of the body, somewhere inside the body

fatal situation

(biology) larva

回虫: intestinal worm

(pathology) roundworm, intestinal worm, worms of the order Ascaridida.

in the city

(construction, architecture) brace, prop, strut, supporting pillar, supporting column, post

宇宙飛行士: an astronaut (member of the crew of a spaceship or other spacecraft, or someone trained for that purpose)

(archaic) the central location of some larger geographic area

a harmful insect, an insect pest