pinpointing

例句:

• The difficulty of pinpointing primitive and derived characters remains.
  要正确地指出原始性状和次生性状仍然感到困难.
  
• Pinpointing the true source of power in Japan is a notoriously slippery task.
  要准确指出日本真正的权力来源,是一项非常困难的任务.
  
• Slogans are characterized by their era - specific contents, definite sources, various materials, agitating effect and pinpointing aim.
  标语口号具有内容的时代性 、 来源的特定性 、 制作材料的多样性 、 效果的鼓动性、目标指向的针对性等特征.
  
• He was good at pinpointing students who were struggling.
  来自NEWYORKER
• But pinpointing the location and then attacking can be difficult.
  来自VOA
• The difficulty with pinpointing an infectious cause of Morgellons has been extensively discussed by the scientific community.
  来自SA