no matter how much time passes
to memorize; to memorise; to learn; to pick up; to feel; to think
to laugh; to smile; to sneer; to ridicule; to be dumbfounded; to be flabbergasted
talkative; loose-lipped; persiflage; frivolous talk
having in mind; happening to know of; idea
complex; complicated; intricate; mixed (feelings)
shot; charge; blow; punch; home run; try
breaking through; breakthrough; surmounting; overcoming; exceeding; passing
difficulty; hardship; trouble; infeasibility; inability (to carry out)
analysis; analytical study; parsing; parse
it is ... that ...; precisely; although; while; it is precisely because ... that ...; only because ...
historical document; archives; old manuscript; pre-Meiji era document addressed to someone in particular
level; standard; level (plane); floor; spirit level; (surveyor's) level
absolutely essential; indispensable; vital; critical
how; in what way; by what means
riddle; puzzle; enigma; enigmatic; mysterious
nature; natural; spontaneous; naturally; spontaneously
to spill; to fall out of; to peek through; to become visible (although normally not); to escape (of a smile, tear, etc.)
certain; sure; definite; reliable; sound; solid
above; up; top; summit; surface; before; previous
notebook; copy-book; note; noting down; (musical) note; laptop (computer)
textbook; coursebook; schoolbook
to take out; to produce; to pick out; to fetch; to retrieve
sidelong glance; short grain (paper)
start; commencement; beginning; initiation
catfish (esp. the Amur catfish, Silurus asotus); (arch.) earthquake
to make; to produce; to prepare (food); to brew (alcohol); to raise; to grow; to till
place; spot; address; district; area; one's house; point
oscillation; vibration; swing (e.g. of a pendulum)
mechanical pencil; automatic pencil
movement; move; motion; trend; development; change
to stop; to turn off; to park; to prevent; to suppress (a cough); to stop (someone from doing something); to dissuade