fro 六级

the to-and-fro of a pendulum

钟摆的往复摆动

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地跳舞。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

There is guard toing-and-froing along the rampart.

有一个卫兵在沿着城堡来回走动。

To move to and fro over;cross and recross.

来来去去在…上来回移动;

the Secretary of State shuttled to and fro seeking compromise.

国务卿来回穿梭，寻求和解。

There’s been a lot of toing and froing next door today. I wonder what’s happening.

今天隔壁在不停地来回折腾，不知道发生了什么事。

All this toing and froing between London and Paris is making him tired.

在伦敦和巴黎之间来回奔波使他惫不堪。

After a great deal of toing and froing, I decided not to change jobs after all.

思来想去好久，我最终还是决定不换工作。

The crank and connecting rod mechanism (CCRM) is often used in automatization machineries.It can transform circumrotation movement into to-and-fro beeline movement.

摘要曲柄连杆机构是自动化中最常用的机构之一，它可使旋转运动与往复直线运动相互转化。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度的侧身跳跃动作（小跳）中，一个技艺精湛的芭蕾舞演员好像在空中可以停上一段让难以置信的时间。

The carvings on the cabin have lost lustre (faded) long before , the slates on the road have been outworn to their slipperiness by to-and-fros of generations.

木屋上的雕花早已泛旧，青石板也被的脚磨得光滑。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另一种提取方法,从红薯废料———薯渣中提取DHEA,即去氢表雄酮。

A new training apparatus for legs based on crank and rocker mechanism,is proposed in this paper.It can simulate the to-and-fro motion of the sporter's legs realistically.

介绍了一种最新研制的训练腿部力量的健身器械,该健身器械采用了曲柄摇杆机构,能真实地模拟运动员双腿交替运动。