gnaws

例句:

• Time, whose tooth gnaws away everything else, is powerless against truth.
  时间, 它的利齿可咬碎万物, 但对真理却无能为力.
  
• The water gnaws at the shoreline.
  海水侵蚀海岸线.
  
• The King is angry. See, he gnaws his lip.
  国王生气了. 看吧, 他咬着自己的嘴唇.
  
• For distraction, he gnaws on watermelon slices and spits out the pulp.
  来自NEWYORKER
• While Speicher is presumed dead, the absence of a body gnaws at military people, family and friends.
  来自CNN
• What gnaws at me is the Federal Reserve Board surely has run out of bells and whistles for economic stimulus, as well.
  来自FORBES