Even at this hour it was acrawl with men, builders pushing up a new switchback stair to join the remnants of the old.
现在
面挤满了人，工匠正
新的梯子接到旧的。
用之字爬坡路线的Even at this hour it was acrawl with men, builders pushing up a new switchback stair to join the remnants of the old.
现在面挤满了人，工匠正新的梯子接到旧的。
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