to untie; to unfasten; to unsew; to unstitch; to solve; to work out; to dispel (misunderstanding, etc.)
key; lock; key (to a problem, success, etc.); clue
unexpected; surprising; unanticipated; strange; unforeseen
in an instant; in a moment; immediately; suddenly; all of a sudden; all at once
speed; velocity; pace; velocity
enclosure; fence; storage (of fruit, vegetables, etc.); partitioned area of a room for conducting tea ceremonies; mistress; castle
great difference; major mistake
to be careless; to be inattentive; long and disheveled (e.g. hair) (dishevelled); (arch.) flaring up (fire); (arch.) rising (e.g. steam)
from the beginning; without hesitation; entirely; completely; head-on; head-first
to put on (one's head); to wear; to be covered with (dust, snow, etc.); to pour (water, etc.) on oneself; to bear (e.g. someone's debts, faults, etc.); to take (blame); to overlap (e.g. sound or color)
various; varied; diverse; all sorts of
device; equipment; machinery; apparatus
(wireless) transceiver; radio; walkie-talkie
function; facility; faculty; feature
addition; supplement; appending; appendix
global positioning system; GPS
LORAN; long-range navigation system; hyperbolic radio navigation system
something heard for the first time; hearing something for the first time
above ground; on the ground; earth's surface; this world; this earth
system; lineage; corollary; system (range of strata that correspond to a particular time period); (taxonomical) series; -type
radio wave; reception; signal; saying strange things
use; application; employment; utilization; utilisation
(one's) current position; current location; present position
specific; particular; designated; specifying; designating; identifying
helm; (ship's) steering wheel
handle; steering wheel; handlebar; handlebars; handle; screen name
two (long cylindrical things)
output (electrical, signal, etc.)
regulation; adjustment; control
advance; moving forward; progress
one's junior; younger generation; next generation; moving backwards; backing up; reversing
to change; to switch; to change over (to); to renew
to speak with an accent; to mispronounce; to be corrupted (of word)
door; gate; opening; title page
built-in; fixed; attached
cooler box; cooler; cool box