instant; moment; (split) second; (in a) flash; (in the) blink of an eye
to get dirty; to become dirty; to become sullied; to become corrupted; to lose one's chastity
threat; intimidation; menace
languid; weary; listless; melancholy
seeing through (a trick, someone's mind, etc.)
soul; spirit; willpower; vitality; something as important as one's own life; something invaluable
out of the question; outrageous; impossible; irrelevant; not pertinent
brain waves; electroencephalogram; EEG
very small; very little; slight; trifling; negligible; insignificant
magnetoencephalograph; MEG
computed tomography; computerized tomography; CT
polyethylene terephthalate; PET; positron emission tomography; PET
acquisition; obtaining; procurement; getting (hold of)
magnetic resonance imaging; MRI
nuclear magnetic resonance; NMR
still; even now; to this day
in this manner; in this way; like this
to stand (something) up; to put upright; to thrust into; to bury into; to make (a noise); to let out; to raise (a cloud of dust, smoke, etc.)
difficulty; hardship; trouble; infeasibility; inability (to carry out)
because; the reason is; if you want to know why
to shake; to wave; to swing; to sway
meticulous; careful; discreet; scrupulous; prudent
to sing; to sing of (love, beauty, etc.) in a poem; to express in the form of a poem; to recite (a poem)
various; varied; diverse; all sorts of
going through; going via; going by way of
to become dim; to become blurred
to chip off; to scrape off; to prune
time; labour; payment (for labour); pay; tedious job; troublesome job
medicine; medical science
leaving behind; desertion; abandonment
chemical substance; chemical
not necessarily so; is not always true; there is no guarantee that ...; there is no telling