option; selecting an option; optional extra; individual item; separate item; option
deciding first; settling (a matter) first; first priority
magnification; enlargement; expansion; amplification
melancholy; gloom; depression
to leave (in someone's keeping); to put (in someone's care); to put (someone) in charge of; to leave (a matter) in someone's hands; to lean on; to put one's weight on
leaving behind; desertion; abandonment
somehow; how; in what way; why; what kind of
copy; photocopy; blurb on a book jacket; catch copy
to lock up; to shut up; to imprison
to manufacture; to produce; to raise (crops); to invent; to dream up; to create
Nagano (city, prefecture)
primeval forest; virgin forest
mountain villa; mountain retreat; mountain cottage
to advance; to move forward; to carry forward (plans, work, etc.); to proceed with; to raise; to elevate
prototype model; experimental machine
complete; completion; perfection; accomplishment
to entrust (someone) with; to leave (a matter) with someone; to have someone deliver (a message, parcel, etc.); to send (through someone); to use (something) to express (one's feelings, opinion, etc.); to express in the form of (something)
to cross over; to go across; to extend; to cover; to range
trial manufacture; experiment; test piece; prototype
(circuit) tester; micrometer
offer; tender; providing; sponsoring (a TV program)
origin; source; base; basis; cause; ingredient; material
ultimate; final; last; eventual
foundation stone; cornerstone
to come true (of a wish, prayer, etc.); to be realized; to suit (e.g. a purpose); to meet (wishes, ideals, etc.); to match (implies competition); to rival
foreign; abroad; overseas
a few years ago; some years back
if it is the case that ...
R; r; radius; curve; nth year in the Reiwa era (May 1, 2019-); refrigerator