dd 21
以上为机器翻译结果，长、整句建议使用 人工翻译 。
As on the DD-21, new technologies will reduce the number of crew members needed and will also cut down on maintenance costs for the CVN-77, according to Chenevy, who made his remarks during the International Naval Review 2000 in New York City.
CNN: Futuristic Windows version to control aircraft carrier
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