They let a massive coil of copper tubing make an opening.

他们用一大盘铜管制作一个通道。

I was remembering the strange pattern the blood had made as it streaked down Emma's wrist, smearing across her forearm, when I stood and, still shaking, tried to pry loose the small length of copper tubing.

我回忆着鲜血流下艾玛的手腕，抹脏她的前臂，形成奇异的图案，一边仍然浑身颤抖地站在那里，试图撬开一小段松动的铜管。