unaerated

例句：

1. 1. The stone monument isunaerated and has been standingfor centuries.
   这座石碑未被腐蚀，已有数百年历史。
2. 2. Thepaint on the walls isunaerated, showingthe original color of the building.
   墙上的油漆未被腐蚀，展示了建筑的原色。
3. 3. Theold books are unaerated, retaining their historical value.
   这些旧书未被腐蚀，保留了它们的历史价值。