我向声音传来的方面斜眼看了看，在红色浪花中突现出一只海洋生物的圆形灰色背脊，在海面上剧烈地向前翻滚，然后沉没入海湾中。

As I squinted in the direction of the sounds, the rounded gray back of a sea creature rose amid a red froth, rolled turbulently at the surface, then sank back into the Gulf.

youdao

我的背脊不断地撞击着圆柱壁。

My back is hitting the round post jamb unceasingly.

youdao

我已经拥有一个全新的背脊了。

I 'v got a brand new back.

youdao