maintenance; preservation; improvement
labored breathing; laboured breathing; dyspnea; dyspnoea
unclear; obscure; unknown; unidentified; ignorance; lack of wisdom
at any rate; anyhow; anyway; in any case; because
locking on (to a target, esp. by radar)
piercing; shrill; noisy; loud; clamorous; wild
posture; pose; position; attitude; approach; stance
rolling over; turning over; turning around (the other way); reversal (of direction, course, etc.); producing a positive from a negative (photography); producing a negative from a positive
obstacle; impediment; hindrance; handicap; impairment; disability
sudden drop; sharp fall; nosedive; swoop
tailspin; spin; drilling; boring
railroad; railway; rail transport
elevated (structure); overhead
route (bus, train, air, etc.); line; line (taken by a group, organization, etc.); policy; course
incoherent; wandering; vague; rambling; whimsical
evening glow; red sunset; afterglow (of sunset)
ascending air current; updraft; upward trend; rise in popularity, influence, etc.
to roll up; to hoist; to take away; to rip off (e.g. money from someone); to blow up (dust)
in a daze; absent-mindedly; dimly; hazily; with a roar (of flames); with a whoosh
to run into; to rush into; to (run and) seek refuge in; to take shelter in
suited figure; person in a suit
full house; no vacancy; sold out; standing room only; full (of people); crowded
here and there; in twos and threes; sporadically; now and then; from time to time; occasionally
lateral direction; horizontal direction; transverse direction; landscape orientation
gravitational acceleration; acceleration of gravity
to be caught; to be arrested; to hold on to; to grasp; to find (e.g. proof); to get (e.g. a taxi)
to be shy; to be bashful; to look shy
direction; district; area; field (e.g. of study); sphere; quarter
to incline toward; to slant; to lurch; to go down (sun); to wane; to sink
to fall down; to fall over; to turn out; to play out; to abandon Christianity (and convert to Buddhism); to apostatize
to be squashed by; to be pinned under
tough; stubborn; determined; severely; heavily; hard