例句與造句

1. It was named by the Advisory Committee on Antarctic Names ( US-ACAN ) after William Gray Robertson, Jr . of ASA, a specialist in the design and installation of communication systems for United States Antarctic Program ( USAP ) in the McMurdo Sound and McMurdo Dry Valleys areas from 1990 to 2000.
2. It's difficult to find installation of communication system in a sentence. 用installation of communication system造句挺難的