This is a social experiment on an unprecedented scale.
这一社会实践的范围是史无前例的。
The coverage of this activity will be on an unprecedented scale.
这次活动的直播和报道队伍将是规模空前的。
This is truly new territory and being done on an unprecedented scale.
这确实是正在以前所未有的规模开展的新领域。
This is truly new territory and being done on an unprecedented scale.
这确实是正在以前所未有的规模开展的新领域。
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