When the rig sank, the riser broke near the top while remaining attached to the blowout preventer at the bottom.

当钻井平台下沉时，立管在顶部附近的地方断裂，同时另一端仍与底部的防喷器相连。

youdao

When the rig sank, the riser broke near the top while remaining attached to the blowout preventer at the bottom, bending itself like a pretzel in its subsequent collapse.

当钻井下沉时，海底立管在顶部附近破裂，另一端还连在防喷阀上。 在随后的倒塌中，它像脆饼一样弯曲。

youdao

Originally the preventer was linked to the Deepwater Horizon by a mile long vertical pipe called a riser, through which oil would flow.

最初，防喷器与深水地平线平台由一根一英里长的垂直管相连，这根管子叫做立管，石油既由此通过。

youdao

Locating a ship resting on the floor of the ocean for many decades is somewhat different than finding a submersible to get to that depth and plugging many leaks in a riser pipe and in a blowout preventer.

WHITEHOUSE: Press Briefing

As early as five hours before the explosion drillers noticed unexpected loss of fluid in the riser pipe, indicating leaks in a part of the blowout preventer.

FORBES: Top Kill: BP's Must See TV