ionization; ionisation; electrolytic dissociation
junior high school; middle school; lower secondary school
science (inc. mathematics, medicine, etc.); natural science; science department (university); science course; science (as a school subject)
gradually; by degrees; little by little; steps; stairs; staircase
long; drawn-out; very long
general idea; concept; notion
being able to do as one pleases; doing at will; pothook
to live; to get along; to spend (time)
to say enough (as much as required); to say plenty; to say well; to say cleverly; to say often; to say frequently
lightning; thunder; god of thunder; god of lightning; anger; fit of anger
growth; development; growing up; growth (of a company, the economy, etc.)
speculation; thinking; meditation
to build up one's strength; to get stronger; to give (someone) strength; to cheer (someone) up; to encourage (someone)
violent emotion; passion; fury
to burn (with jealousy, desire, etc.)
southeastern part; the southeast
leading aristocrat; great house; grand seigneur; boyar
Metropolis (of Tokyo); (Tokyo) Metropolitan District; counter for cities and towns; capital
to spend time (on doing something)
to save up; to stockpile; to stash away; to hoard; to amass; to salt away
gem; jewel; precious stone
difficult to ...; hard to ...
to step over; to step across; to stride over; to stretch over; to span; to bridge
foreign country; other country; another province; strange land; alien land
exchange (e.g. cultural); interchange; interaction; alternating current; AC