在美国主要城市的乡村博览会和工业博览会上，大量对新设备的奖励被授予。
In the United States, multitudes of premiums for new devices were awarded at country fairs and at the industrial fairs in major cities.
在美国主要城市的乡村博览会和工业博览会上，大量对新设备的奖励被授予。
In the United States, multitudes of premiums for new devices were awarded at country fairs and at the industrial fairs in major cities.
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