Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
A、hand-carvedThe first important exposition in the United States was held in Philadelphia in 1876.
Thewheelsofthefirstroadvehicleswerefashionedfromcrudestonedisks.
Comets are still regarded with awe by some people.
Somechildrendisplayanunquenchable难以抑制的curiosityabouteverynewthingtheyencounter.
Peoplewhodonotsleepenoughtendtobecomeirritable.
