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- A rapid to - and - fro movement. 快速的来回移动
- 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。
- 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。
- I have a trick of walking to and fro in my room. 我有个在房中走动的习惯。
- Gerhardt roved to and fro like a person in a dream. 葛婆子如同梦中人一般踱来踱去。
- The cat made little rushes to and fro after the ball. 猫追着球跑过来跑过去。
- The tall chimney tottered (to and fro) and then collapsed. 那座高烟囱摇摇晃晃地倒了下来。
- In early May the other hummingbirds returned,and when Squeak spotted them outside,he became excited,chattering and flying rapidly to and fro. 5月初，其他蜂鸟又回来了。“佳乐”发现外面的伙伴，兴奋极了，它声声呼唤，急得来回飞个不停。
- Buses go to and fro between the center of the city and the city limits. 公共汽车往返行驶于市中心和城市边缘之间。
- In early May the other hummingbirds returned, and when Squeak spotted them outside, he became excited, chattering and flying rapidly to and fro. 5月初，其他蜂鸟又回来了。 “佳乐”发现外面的伙伴，兴奋极了，它声声呼唤，急得来回飞个不停。
- Those boats are prepared for waftage to and fro. 那些船舶是准备用来来回运送货物的。
- The whole house rocked (to and fro) when the bomb exploded. 炸弹爆炸时整座房子都震得(前後)直晃。
- You will see that it is like a flea,constantly hopping to and fro. 你会发现心就像跳蚤一样跳个不停。
- People are hurrying to and fro in the street. 街道上人来人往。
- The boat rocked to and fro on the water. 小船在水上前后摇晃。
- The boss traversed to and fro in his office. 老板在办公室来回踱步。
- The clown is jumping to and fro on the stage. 小丑在舞台上来回地跳。
- She is walking to and fro in the office . 她在办公室里踱来踱去。
