Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
Bats fly, rather than glide, and thus are the only mammals capable of true flight.
In1974HenryAaronbrokeBabeRuth'smonumentallifetimerecordof714homeruns.
Blue－greenalgaegrowabundantlyinsaltmarshes.
Some animals pant and sweat to speed evaporation of body moisture and thus cool themselves.