<prompt> Translate the following text to EnglishWatu wazima wamekuwa wakishangazwa na jinsi mawasiliano ya vijana yanavyoweza kufanywa kwa kutoa moja ya labda sauti za chini ya densi sita, na itakuwa ya kuelimisha kutazama wakati kitu kama hicho kinaenea kwa idadi ya watu kwa ujumla.  <response>: Adults have always been struck by how much teen-age communication can seemingly be accomplished by emitting one of perhaps half a dozen subverbal phonemes, and it will be instructive to watch as something along these same lines spreads to the general population. 