backbone
美[ˈbækboʊn] 网络中坚；脊柱；脊骨；骨架
1 . Petty officers are the backbone of a navy.
军士是海军的骨干。
来自柯林斯例句
2 . Agriculture forms the backbone of the rural economy.
农业是农村经济的基础。
来自《权威词典》
3 . The wounded soldiers showed much backbone before the enemy.
受伤的士兵在敌人面前表现出了威武不屈的精神.
来自《简明英汉词典》
4 . Agriculture used to be the economic backbone of this country.
农业曾是这个国家的经济支柱.
来自《简明英汉词典》
5 . Standing up to bullies takes plenty of backbone .
勇敢地对付暴徒需有大无畏精神.
来自《简明英汉词典》
1.a central cohesive source of support and stability;
faith is his anchor
2.fortitude and determination;
he didn't have the guts to try it
3.the series of vertebrae forming the axis of the skeleton and protecting the spinal cord;
the fall broke his back
4.the part of a network that connects other networks together;
the backbone is the part of a communication network that carries the heaviest traffic