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1·This to-and-fro approach is called a rocking chair design.

这种往回式方法称为“摇椅(rocking chair)”式设计。

2·She stood up and began to pace to and fro.

她站起来开始来回地踱步。《柯林斯英汉双解大词典》

3·She rocked the baby to and fro.

她来回摇动着婴儿。《牛津词典》

4·The ship was rolling heavily to and fro.

轮船剧烈地颠簸着。《牛津词典》

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！”

6·What those early craftsmen had found by trial and error was that under pressure a pagoda's loose stack of floors could be made to slither to and fro independent of one another.

那些早期的工匠通过反复试验发现：在压力作用下，宝塔松散堆叠的楼层可以彼此独立地来回滑动。

7·I paced the floor to and fro with heavy strides as if I was excited to fury by the observations of the men—but the noise steadily increased.

我迈着沉重的脚步地来回走着，仿佛我对这些人的调查感到很愤怒——但这种声音越来越响。

8·As it shrieked and moaned, the poor little sufferer was blown to and fro like the hammer of a bell.

它在尖叫呻吟，这个可怜的小小受难者就像钟锤一样被吹来吹去。

9·I am making the bed now, the little girl called out again, while she ran busily to and fro.

“我正在收拾床铺呢。”小女孩一边忙着跑来跑去，一边又叫道。

10·The ray quivered to and fro, making her figure dim or distinct- now like a real child, now like a child's spirit- as the splendor went and came again.

那束光来回抖动，使得她的身影忽明忽暗——一会儿像个活生生的孩子，一会儿又像是孩子的精灵——随着光忽明忽暗。

往复

1·Special designed drive outfit and PLC are adopted to control object moving to-and-fro and rotating at prearranged positions.

采用特殊设计的传动机构结合PLC控制物体作直线往复运动和在预定位置作自转运动。

2·A novel uniform heating method by impinging jet moving to-and-fro along the width of a heating object was proposed in this paper.

本文提出了喷嘴沿被加热物体宽度方向往复移动式射流冲击加热方法，该加热方法可提高被加热物体的等温性。

3·These methods cover to-and-fro feed movement andintermittent movement.

这些加工方法涉及到往复进给运动、间歇分度运动等。

4·Cam manipulator automatic send and unload soap. Moulage to-and-fro 90degree stamp. Soap precision nigh and safety.

凸轮机械手自动送。卸皂，印模90度往复打印，成皂精度高安全。