here; this place; this point; here; these past ... (e.g. three years); these last ...
indicates a question; or; whether or not; some- (e.g. something, someone); hmm; huh; very
bureau director; office chief
unnecessary; not needed; not necessary
until now; so far; up to the present
investigation; examination; inquiry; enquiry; survey
danger; peril; hazard; risk
material; substance; matter
detection; sense (e.g. sensor)
as expected; sure enough; after all (is said and done); in the end; too; also
to fly; to soar; to jump; to leap; to spatter; to scatter; to hurry
to stand; to rise; to find oneself (e.g. in a difficult position); to depart (on a plane, train, etc.)
aviation; flight; flying; to fly; to take a flight
if; when; and; with; used for quoting (thoughts, speech, etc.); promoted pawn; indicates a question
to think (about, of); to think over; to consider; to bear in mind; to think (that); to believe; to intend (to do)
valid; proper; right; appropriate; reasonable
this; last (couple of years, etc.); these; you (as in "you liar")
circumference; outskirts; environs; (computer) peripheral
to be found; to be discovered
place; spot; address; district; area; one's house; point
safe; in (of a ball, in tennis, etc.); all right; OK
out (of a ball, in tennis, etc.); outside the line; out; putout; outer; external; exit
bad (taste); unpalatable; poor; unskillful; ugly; unattractive
yes; yeah; hum; hmmm; oof
to hide; to be hidden; to conceal oneself; to disappear
space development; space exploration
special; particular; extraordinary; exceptional; especial
search (esp. in criminal investigations); investigation; inquiry; enquiry
bureau; department; office (e.g. post, telephone); broadcasting station (e.g. television, radio); affair; situation
to say; to be called; to do
near; neighbourhood; nearly (e.g. "it took nearly one year"); close to; shortly; soon
unidentified flying object; UFO
landing; alighting; touch down
trace; vestige; mark; sign; evidence
discovery; detection; finding
what; how many; many; a lot of; several; a few
unusual event; strange occurrence; strange phenomenon; something abnormal; change (for the worse); accident
to be; to exist; to have; to be located; to be equipped with; to happen
dear me!; good gracious!; well; let me see; now
today; this day; these days; recently; nowadays
day on which a museum, library, etc. is closed; closed day