她在一次骑马事故中伤到了脊柱。

She injured her ___spine in a riding accident.

我的医生推荐了特定的锻炼来矫正我脊柱的问题。

My doctor recommended specific exercises to correct problems with my ___spine.

坐直对你的脊柱健康有益。

Sitting up straight is beneficial for the health of your ___spine.