backbone
	英 ['bækbəʊn]
美 ['bæk'bon]
	    
		英文词源
	
	- backbone (n.)
 - "spine," early 14c., from back (n.) + bone (n.). Figurative sense of "strength of character" is attested from 1843.
 
 
		双语例句
	
	- 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》