1. She stood up and began to pace to and fro. 她站起来开始来回地踱步。
2. The room thrummed with the activity of packets fluttering to and fro like little digital moths around a digital streetlight. 充斥房间的活动数据包来回地跳跃,就像围绕着数字路灯的数字飞蛾。
3. She rocked the baby to and fro. 她来回摇动着婴儿。
4. The ship was rolling heavily to and fro. 轮船剧烈地颠簸着。
5. Heidi in her transport was running to and fro: "Grandfather, come out!" 海蒂在路上里跑来跑去,喊着:“爷爷,快出来!”