People will have robots in their rooms.
There will be more population.
2. more, less和fewer用于表示数量的用法
more / fewer + countable nouns
more / less + uncountable nouns
robot, everything, paper, use, less, fewer, tree, building, space, fly, took, moon, fall, fell, alone, pet, probably, dress, which, even, wrote, myself, interview, future, came, company, thought, unpleasant, scientist, however, hundred, already, made, factory, simple, such, everywhere, human, shape, snake, huge, possible, electric, seem, impossible, housework
pollution, astronaut, rocket, space, suit, casually, predict, prediction, earthquake, sound, bored, toothbrush
parrot, fiction, rating
space station, fall in love with, go skating, be able to, come true, hundreds of, in the future, look for