froing

基本解释

• n.仅用于短语toing and froing（来来回回，反复）

同根派生

英汉例句

• Trucks shuttled to and fro on the high ways.
  车辆在高速公路上穿梭行驶。
• He is walking to and fro in the room.
  他在房间内踱来踱去。
• The ship was rolling heavily to and fro.
  那船晃来晃去很不平稳。
• The signals go to and fro at a very high but almost constant speed.
  那些信号用非常快但几乎不变的速度来回传送。
• The cat made little rushes to and fro after the ball.
  猫追着球跑过来跑过去。