You're diving from a small boat so you choose the seated backroll to enter the water.

你将从一条小船上跳水，所以选择背向坐姿这一姿势入水。

In V, they are the largest Spanish (Nevada, where there is a large Hispanic) population, most backroll won (of that vote went to) Hilary Clinton.

在内华达，那里有一大批西班牙人口，大部分支持希拉里克林顿。