manual central office造句

例句与造句

1. In 1982, in Bryant Pond, Maine, Susan Glines became the last switchboard operator for a hand-crank phone when that exchange was converted; manual central office switchboards continued in operation at rural points like Kerman, California and Wanaaring, New South Wales as late as 1991, but these were central-battery systems with no hand-cranked magnetos.
2. It's difficult to find manual central office in a sentence. 用manual central office造句挺难的