“背脊”造句

背脊生来就是负重的.
The back is shaped to the load.

那男孩用石子掷击小流氓的背脊.
The boy gave the bully a pelt on the back with a pebble.

敢情是钓索在它高高隆起的背脊上滑动了一下.
The wire must have slipped on the hill of his back.