backbone

n.脊梁骨，脊椎；分水岭；支柱；决心，毅力

网络解释.中坚；脊柱；脊骨；骨架

词形变化:

复数：backbones

n.1.决心,耐力释义下的同义词

resolution resoluteness resolve stamina endurance pluck fortitude

2.勇气,气概,无畏释义下的同义词

valour intrepidity guts strength daring spunk grit mettle courage

3.正直,刚毅,品质释义下的同义词

integrity manhood quality manliness character

4.脊柱,脊骨释义下的同义词

spine spinal vertebrae column