to and fro

1. She stood up and began to pace to and fro
   她站起身，开始来回踱步。
2. The boat was rocking gently to and fro in the water.
   小船在水中轻轻地来回摇荡。
3. Various kinds of vehicles run to and fro in the street.
   大街上往来的车辆很多。
4. Branches waved wildly to and fro.
   树枝猛烈地摇来摇去。
5. The girl's pigtails swing to and fro as she runs.
   小女孩一跑，辫子就来回甩动。
6. On the contrary, the frog went to and fro on the frontier, looking for something edible.
   与之相反，青蛙在边境上来来回回地寻找能吃的东西。
7. In the also pitch-dark road, villagers were coming to and fro silently.
   漆黑的街道上，络绎不绝的村民们在默默地你来我往。
8. Rocking safely to and fro.
   安全地来回摇晃。
9. Now move the hand to and fro and around but not up and down.
   然后把手前后左右及旋转摆动，但不要上下摆动。
10. Check linkage on the control box by sliding it to and fro to see if it moves smoothly.
    通过来回滑动控制盒上的连杆来对其进行检查，以查看连杆移动是否平稳。
11. There are always people in your health Life in to and fro, from your world No longer lonely.
    总有些人会在你的生命里来来回回，从此你的世界里不再有寂寞。
12. Buses go to and fro between the center of the city and the suburbs.
    公共汽车在市中心和郊区之间来回地行驶。
13. I became more worried when I saw all the people walking to and fro outside the office.
    看到所有的人在办公室外面走来走去，我变得更焦虑了。
14. Check linkage on vacuum unit by sliding to and fro to see if it moves smoothly.
    通过来回滑动来检查真空单元上的连杆，以查看连杆移动是否平稳。
15. I saw an old man walking to and fro in this street.
    我看见一个老人走在街道徘徊。
16. We had a rough time for a month, tramping to and fro in the earth, and suffering.
    我们吃了一个月的苦头，在大地上往来跋涉，受尽折磨。
17. Well-dressed guests moving to and fro over the thick carpets carried him back to the old days.
    那些在厚厚的地毯上来回走动的衣冠楚楚的客人们，把他带回到过去的日子。
18. Getting out of the carriage, with drooping head he walked to and fro in silence, breathing heavily.
    他走下马车，低着头，沉重地喘着气，来回不停地走动，一言不发地等候着。
19. I was disturbed by all the people walking to and fro outside the office.
    人们在办公室外走来走去，使我受到了干扰。
20. She could see a lone figure on the deserted beach walking to and fro.
    她看到一个孤寂的人影在荒凉的海滩上走来走去。
21. She walked to and fro.
    她来回地走着。
22. The slogan crier saw the dog and frog jump to and fro in the fog.
    呼口号者看见狗和青蛙在雾中来回跳。
23. The flower seemed to quiver, and then swayed gently to and fro.
    花儿似乎在颤动，接着轻轻地来回摇摆。
24. He spends his life going to and fro between his living quarters and his place of work.
    他一辈子来往于他的住所和工作地之间。
25. The pendulum swung slowly to and fro.
    钟摆在慢慢地来回摆动。
26. 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。
27. 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。
28. The man walked to and fro while he waited for his phone call.
    这个人在等电话时不停地来回走动。
29. 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。
30. Down in the yard the red-armed woman was still marching to and fro between the washtub and the line.
    院子里那红胳膊女人，还是在洗衣盆跟晾衣绳之间忙来忙去。

adv

1. moving from one place to another and back again
   1. he traveled back and forth between Los Angeles and New York
   2. the treetops whipped to and fro in a frightening manner
   3. the old man just sat on the porch and rocked back and forth all day

   Synonym:    back and forthbackward and forward