这些文献的范围和特点一直被秘而不宣，或被几乎所有那些察看过它们的人降至最低限度。
The scope and character of these papers have been hushed up, or at least minimized, by nearly all those who have inspected them.
这些文献的范围和特点一直被秘而不宣，或被几乎所有那些察看过它们的人降至最低限度。
The scope and character of these papers have been hushed up, or at least minimized, by nearly all those who have inspected them.
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