ThefuturesurvivalofthebaldeagleisstillanimportantAmericanecologicalconcern.
A、migrationThe flower bud of a water lily 百合 opens at sunset since .its opening is triggered(commence) .by the decreased light.
Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
Somecosmeticsmanufacturersattempttocapturetherose'sunmistakablefragrance香味insoapsandperfumes.
The first paper was made from the bark of the mulberry tree.
Withlasersscientistscanprobemanyphysicalprocesses,suchascombustion,oncebeyondourken.视野
