pursuit of knowledge; studying; learning; training; completing a course
but; however; (and) yet; nevertheless; still; for all that
to do; to undertake; to send; to dispatch; to put; to move; to give (esp. to someone of equal or lower status)
that is so; that is right; it looks to me; people say that; it is said that; I hear that
they; those guys; those fellows
inside; within; while (e.g. one is young); during; among; amongst; in (secret, chaos, poverty, etc.)
hide-and-seek (game); hide-and-go-seek
(approximate) time; around; suitable time (or condition); time of year; season
nicely; properly; frequently; often; I'm glad that you ...; thank you for ...
two persons; two people; pair; couple
you; Mr; Mister; older brother; elder brother
such; that sort of; that kind of; no way!; never!
play; playing; pleasure; amusement; play (in a mechanism, e.g. a steering wheel); slack
unexpectedly; surprisingly; unexpected; unanticipated; unforeseen
interesting; fascinating; amusing; funny; enjoyable; fun
may; might; perhaps; may be; possibly
house; residence; family; household; lineage; family name
inside; interior; among; within; middle; center; during
called; named; as many as; as much as; all ...; every single ...
to restrict; to limit; to be restricted to; to be limited to; to be best (for); to be the best plan
how; in what way; how about
to hide; to conceal oneself; to disappear (behind); to be hidden (by); to live in seclusion; to retire (from the world)
ninjutsu; combat and stealth techniques used by ninja for espionage, sabotage, assassination, etc.
tempering (metal); annealing; forging; toughening; disciplining; training
I see; that's right; indeed
at once; immediately; without delay; promptly
something like ...; things like ...; someone like ...; the likes of ...
thing; object; one's things; possessions; things; something; quality
and the like; such as; or something; something like; I hear that ...; people say that ...
to be; to exist; to have; to be located; to be equipped with; to happen; to come about
public employee; government employee; public-sector worker; public servant; civil servant
after all; because; but; even; too; as well
stability; steadiness; consistency; stable
to do; to carry out; to cause to become; to make (into); to serve as; to act as; to wear (clothes, a facial expression, etc.)
while; during; while; although; all; both
to continue; to keep up; to keep on; to continue ...; to keep on ...
impossible; unthinkable; unbelievable; ridiculous
battle; war; fight (against time, poverty, etc.); struggle (for freedom, survival, etc.); contest; competition
to end; to come to an end; to finish; to complete; to finish doing; to be past its (one's) prime
necessary; needed; essential; necessity; need; requirement
now; the present time; just now; another; more