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房间里忙碌着。

Even at this hour it was acrawl with men, builders pushing up a new switchback stair to join the remnants of the old.

即使它现上面挤满了人，工匠将新的梯子接到旧的上。