exchange; interchange; switching; reciprocity; barter; substitution
to advance; to move forward; to carry forward (plans, work, etc.); to proceed with; to raise; to elevate
substitute article; back-up
(not) even with; (not) even using
instant; moment; (split) second; (in a) flash; (in the) blink of an eye
to be closed; to be blocked; to be clogged; to be plugged up; to be occupied; to be taken (e.g. accommodation)
union; joining; conjugation
one face; one surface; the whole surface; one aspect; one side; (on) the other hand; one broad, flat object
a few hours; several hours; a couple of hours
conformity; compatibility; adaptability; congruity; congruence
rotation; making the rounds; spreading; effect; efficacy; by way of; via
fingertip; finger; toe tip; toe
board; plank; sheet (of metal); plate (of glass); cutting board; chopping board
being placed one upon another; piling up; superimposition; superposition; excellent; splendid
revolution; rotation; turning; turning (an aircraft or ship)
neighbourhood; neighborhood; vicinity
large river (esp. the Yangtze); Lake Biwa
cavity; hollow; void; hollow (voice, smile, etc.); blank (eyes, look, etc.); vacant (expression, stare, etc.)
darkness; the dark; bewilderment; despair; hidden place; secrecy
cavity; hollow; cave; hollow
lightly; wide (open); gapingly; suddenly; unexpectedly
hole; opening; pit; hollow; burrow; den; deficit
latest; newest; late-breaking (news)
reconnaissance satellite; spy satellite
to see without obstruction; to get an unobstructed view (of); to see into (someone's thoughts); to read (someone's feelings, intentions, etc.); to foresee; to predict
sound; noise; audio; acoustics; reverberation
probe; inquiry; enquiry; investigation
gate; branch of learning based on the teachings of a single master; school; phylum; division; counter for cannons
unpreparedness; falsehood; Chinese "Emptiness" constellation (one of the 28 mansions)
secrecy; highly classified information
earth; ground; place; territory; bottom (of a package, book, etc.); earth (one of the five elements)
spirit world; underworld; other world; supernatural world; different dimension
passage; pathway; roadway; avenue; aisle
regarding as very likely (to win, succeed, etc.)
hypothesis; supposition; assumption; tentative theory
astounding; tremendous; wild; crazy; exorbitant; outrageous
idea; conception; way of thinking; approach; expression
influential; prominent; leading; strong; powerful; likely
supporting evidence; corroboration
to pass; to pass on; to give (something) a miss; to cut it out; to knock off (for the day); to let the matter drop
to be manageable; to be able to handle