1. The rooms were acrawl with the small cleaning animals, all rubber and metal.
   橡胶做的，金属做的小小的清洁动物在房间里忙碌着。
2. Even at this hour it was acrawl with men, builders pushing up a new switchback stair to join the remnants of the old.
   即使它现在上面挤满了人，工匠正将新的梯子接到旧的上。

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