yes; that is correct; understood; I see; present; here; pardon?
serious; grave; dignified; solemn
hard to say; inexpressible; hesitant to say; embarrassing; delicate
research institute; (research) laboratory
research; study; investigation
displeasure; discomfort; unpleasantness; indisposition; ailment
certainly; surely; undoubtedly; just; precisely; exactly
test subject (esp. animals or objects); experimental subject
(state of) house arrest; (state of) confinement
escape; flight; running away; elopement; fleeing
pursuer; pursuing party; posse; (arch.) tailwind; (arch.) favorable wind; (arch.) fair wind
by choice; of one's own free will; on one's own initiative; off one's own bat
older brother; elder brother; brother-in-law (spouse's older brother or older sister's husband)
return (home); repatriation; feedback (in an electronic circuit, biological system, etc.)
to go (to); to make one's way (to); to visit
end; verge; extremity; miss; failure; blank (e.g. lottery ticket)
to be erected; to be built
experiment; experimentation
transplanting (a plant); transplant; transplantation (of an organ, tissue, etc.); transplant; embryo transfer; embryo transplant
to go around; to make a circle around; to surround; to circle; to come around (of a season, anniversary, turn, etc.); to return
battle; war; fight (against time, poverty, etc.); struggle (for freedom, survival, etc.); contest; competition
to begin; to start; to happen (again); to begin (anew); to date (from); to originate (in)
this is why; that is the reason why; it is the case that; so; thus; with that
to be sacrificed; to become a victim (of); to fall victim (to); to lose one's life
in order to; for the purpose of; must; should
(cannot) possibly; (not) by any means; (not) at all; utterly; absolutely
chance (of success); odds
to challenge to (a fight, game, etc.); to throw down the gauntlet; to tackle (e.g. a problem); to attempt; to pressure (someone) for sex; to make advances to
hot (to the touch); passionate (feelings, etc.); ardent; hot (e.g. temper); zealous; enthusiastic; intense
(non-documentary) television series; TV drama; teledrama; drama; dramatic incident; spectacle
while crying; tearfully; in tears
imitating; copying; mimicry; behavior; behaviour; action
that is to say; so that means
giving and taking; exchange (of letters); arguing back and forth; (conversational) exchange
to blush; to go red in the face; to change color; to change colour
to hang one's head; to look down; to cast one's eyes downward
walking; strolling; roaming; wandering; exploring
not worth mentioning; nothing special; nothing in particular; no notable ...
waves that remain after the wind has subsided; after-effect; aftermath
to be blown off; to blow off; to blow away; to vanish; to disappear; to be dispelled
supposing; even if; granting that; temporarily; provisionally; for the time being