necessity is the mother of invention
to feel; to sense; to experience
key; lock; key (to a problem); clue
although I say; although one might say; although called
mistake; error; accident; mishap; improper conduct (e.g. between man and woman); indiscretion
one-by-one; separately; in detail
to find out; to discover; to locate
to be grounded on; to be based on; to be due to; to originate from
having no thought for; having no consideration for; disregarding; overlooking; (arch.) being found not guilty (in an Edo-period court); (arch.) acquittal
drumming (noise); beating; rapidly; quickly; continuously; one after the other
place to put something; storage space; storehouse; depository; repository; shed
to track down; to locate; to find out; to smoke out; to ferret out; to chase up
to remove; to eliminate; to eradicate; to exclude; to except
to pin down; to hold down; to cover (esp. a part of one's body with one's hand); to clutch (a body part in pain); to get a hold of; to obtain
to think of; to hit upon; to come into one's mind; to remember; to recall
enforcement; implementation; putting into practice; carrying out; operation; working (e.g. working parameters)
making; forming; cultivating; form; appearance
at the same time as; while; as well as (multiple roles)
accurate; correct; precise; exact
double; twice (as much); twofold
type of occupation; occupational category
to differ (from); to vary; to not be in the usual condition; to not match the correct (answer, etc.); to be different from promised; isn't it?
very; considerably; by no means; not readily; middle; half-way point
execution (e.g. of a plan); carrying out; practice; action; implementation; fulfillment
difficult; hard; impossible; unfeasible; fussy; particular; gloomy
possible; potential; practicable; feasible
Europe and America; the West
switching over to; migration; transition
comparatively; relatively
enterprise union; company union; in-house union
position; situation; viewpoint; standpoint; point of view
weak; frail; delicate; tender; unskilled; weak (wine)
shield; buckler; escutcheon; pretext
rate; ratio; profit; assignment; 10%; unit of ten percent; match
society; public; community; social studies
custom; practice; said; aforementioned; instance; example
liquidity (esp. financial); fluidity; mobility (social, job, etc.)