每根钢索的单股钢丝束悬挂在滑车组上。
The individual strands of each cable were hung in pulley blocks.
合成定序法模拟细胞的复制步骤，分析单股DNA的序列。
Sequencing-by-synthesis methods simulate parts of this process on a single DNA strand of interest.
然后，我还得爬过各种单股或双股的绳索和绳梯，才能到达那块木板。
From there, I needed to scramble over various single - or double-stranded cables and horizontal rope ladders before reaching the plank, which I now could see was hinged to the structure.
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