到1944年，美国每5分钟就能生产一架飞机，每天能让50艘商船下水，每个月能让8艘航母投入战斗。
By 1944 its factories built a plane every five minutes while its shipyards launched 50 merchant ships a day and eight aircraft carriers a month.
到1944年，美国每5分钟就能生产一架飞机，每天能让50艘商船下水，每个月能让8艘航母投入战斗。
By 1944 its factories built a plane every five minutes while its shipyards launched 50 merchant ships a day and eight aircraft carriers a month.
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