toughest

例句:

• The toughest words were reserved for Syria and Iran.
  来自VOA
• Malaysia has emerged as the toughest critic of the North's environmental attitudes.
  马来西亚已成为对北方发达国家环保态度最严厉的批评者。
  
• The tobacco industry escaped unscathed from its toughest legal challenge.
  烟草业成功逃过了最严峻的法律质疑。
  
• Now she faces her toughest task of all.
  现在她面临着最艰巨的任务。
  
• Global warming is the toughest possible issue for Gore.
  来自NEWYORKER
• Here they face the toughest challenge of their lives .
  来自THETIMES