名词 ,

1.可数名词：脊骨,脊柱

2.主（山）脉，干脉

3.支柱；骨干；基础

4.不可数名词：骨气；坚毅，毅力

词形变化

形容词backboned

单词分析

这些名词都可表示“勇气、胆量”之意。

courage普通用词。指面对危险或困难时无所畏惧的精神和敢于奋斗的进取心。

bravery指在危险中表现出的无所畏惧精神或在逆境中仍能坚持下去的毅力。

backbone指性格倔强，意志坚定，有骨气，有顽强的决心去做某事。

nerve侧重指面临危险或在冒险的情况下具有冷静、清醒的头脑和坚定无畏的勇气。

英语解释

the series of vertebrae forming the axis of the skeleton and protecting the spinal cord

the part of a book's cover that encloses the inner side of the book's pages and that faces outward when the book is shelved

fortitude and determination

a central cohesive source of support and stability

the part of a network that connects other networks together