发布于：2025-07-05 23:00浏览量：102文/优校网
1.脊骨,脊椎;分水岭;主要山脉;主要成分;中枢;中坚,骨干;主力;刚毅,骨气;书脊
1.the row of small bones that goes down the middle of your back
2.the determination and strong personality that you need in order to do what is right or deal with a difficult situation