And what the carpenter did, because he was quite a clever chap, is he went to stand on that spiral staircase and he let his plumb line down and he drew it back up.

而木匠做， 因为他是个相当聪明人，就是他站在楼梯上， 放下他铅线， 然后又收了回来。

Sivert especially had a genius for knocking in nails, but Eleseus was better at handling a plumb-line.

Sivert 尤其擅长敲钉子， 但 Eleseus 更擅长处理铅线。

Drake would have learned to feel his way along the coast with his lead line.

德雷克应该学会了用铅线沿海岸摸索前进。