shuttling ['ʃʌtlɪŋ]

例句:

• Trucks and cars were shuttling to and fro on the highways.
  公路上卡车和汽车正来往奔驰穿梭.
  
• Trucks and cars shuttling and fro on the highways.
  公路上卡车和汽车正来往“奔驰”穿梭.
  
• Your task is shuttling between the flowers in all and kept the honey.
  你的任务就是在各个花朵间穿梭,不停的采蜜.
  
• Various envoys are shuttling among capitals, including between Pyongyang and Beijing.
  来自VOA
• Instead she spent incomprehensible days shuttling between different floors of a Sheffield hospital tending to her sick parents.
  来自BBC
• When assembled, however, these fibers then act like ferries, trapping and shuttling HIV virus particles to target cells.
  来自SA