once in a lifetime (opportunity); (a golden opportunity that may) happen only once in a thousand years
heh heh heh; tee-hee; giggle
to bring to a finish; to bind firmly; to superintend
goodness; excellence; virtue
merciless; ruthless; pitiless; unfeeling
to step on; to tread on; to set foot on (e.g. foreign soil); to stand on; to experience; to undergo; to follow (rules, principles, etc.)
to get in; to go in; to come in; to flow into; to set; to set in
presentation; exhibit; suggest; citation
in case of; at that time; at this time
to lie in wait (for); to be on the watch (for); to wait (for); to watch (for)
underground; below the ground; world of the dead; the grave; underground (activities, movement, etc.); secret
economical; efficient; lean; compact
regular; well-regulated; systematic; orderly
safety belt (typically used in Japanese construction work); fall-prevention harness
space; interval; space character; whitespace
free action; free activity; acting at one's own discretion; taking one's own course; free hand; independent action
lifeline; safety rope; safety tether
maze; labyrinth; inner ear
unthinkable; count for nothing; not matter; out of the question
performance; execution; skill; dexterity; tact
trick that may deceive a child; transparent ploy; mere child's play; kid stuff; puerile trick
valuable; worthwhile; worthy; worth doing
treasure; treasured item; prized possession
counter for jewels in a watch; counter for transistors, diodes, etc. in an electronic product
appropriate; suitable; fitting; apt; proper; right
measure; step; dealing with; medical treatment
to find out; to discover; to select; to pick out; to look out (from the inside); to be wide-eyed (in surprise, anger, etc.)
moustache; beard; whiskers (on a cat, etc.); feelers (on an insect, etc.); shadow (on a candlestick chart)
to stroke; to caress; to brush gently; to comb (hair); to smooth down
to reason; to sum up; to conclude
user; consumer; master (e.g. of swordsmanship); prodigal; spendthrift
route; course; path; one's future course (e.g. after graduating high school)
picking; collecting; harvesting