ring; circle; hoop; wheel; circle (e.g. of friends)
structure; construction; makeup; framework; organization; pattern
machinery; gadgetry; equipment
science fiction; sci-fi; SF
displeasure; discomfort; unpleasantness; indisposition; ailment
absolutely; positively; decidedly
daydream; fantasy; fancy; vision
fully loaded; full load; loaded condition
unmanned probe (vessel, spacecraft, etc.)
100,000,000; one hundred million
iron (Fe); strong and hard (as iron); railway; railway enthusiast
probe; inquiry; enquiry; investigation
mineral deposit; ore deposit
permission; approval; authorization; to permit; to authorize
one's own convenience; one's way; surroundings; environment; convenience; ease of use; financial circumstances
to ask a question; to ask questions
historic; historical; traditional
laborer; labourer; blue-collar worker
some; several; many; how many; how much; very
to rise up (e.g. pillar of smoke); to go up
cover; concealment; masking; occultation
moat; fosse; trench; underground air-raid shelter; dugout
taking refuge; finding shelter; evacuation; escape; seeking safe haven
various places; several sources
class (e.g. school); grade; rank; kyū; kyu; junior rank in martial arts, go, shogi, etc.