soundproofing; sound insulation
outside (the room, building); outdoors
sound; noise; note; fame; Chinese-derived character reading
development; evolution; expansion; spreading out; expansion (of an algebraic expression); development (of a three-dimensional shape)
nature; disposition; temperament; qualities; attributes; talents
yes; yeah; hum; hmmm; oof
custom; practice; said; aforementioned; instance; example
enforcement; implementation; putting into practice; carrying out; operation; working (e.g. working parameters)
to be decided; to be settled; to be unchanging; to be the same (as always); to be a fixed rule; to be destined; to be well executed (of a manoeuvre in a sport, game, etc.)
to lower one's voice; to speak with a hushed voice
that is so; that is right; it looks to me; people say that; it is said that; I hear that
previous time; last time; previous installment; previous instalment; previous session
research establishment; research institute; laboratory
fifteenth day of the month; fifteen days
magic; Magic Marker; felt-tip pen; magic number
supposing; even if; granting that; temporarily; provisionally; for the time being
appearance; arrival; make one's appearance
dealing with; coping with
prefix for forming ordinal numbers
party; group; crew; company (of troops); corps; unit
adds force or indicates command
cause; seed; variety; kind; counter for varieties
to use; to make use of; to utilize; to utilise
combat; battle; action; active service; actual fighting
meagre; meager; scarce; limited; destitute; hard up
continent; continental Asia (esp. mainland China); continental Europe
indigenous people; native people; aborigines
blood; blood; ancestry; (the) blood; feelings
marked; pronounced; showing a strong tendency (towards)