3.They travel to and fro between London and Paris.
他们奔走于伦敦和巴黎之间。
4.There is guard toing-and-froing along the rampart.
有一个卫兵在沿着城堡来回走动。
5.To move to and fro over;cross and recross.
来来去去在…上来回移动;
6.the Secretary of State shuttled to and fro seeking compromise.
国务卿来回穿梭，寻求和解。
7.There’s been a lot of toing and froing next door today. I wonder what’s happening.
今天隔壁在停地来回折腾，发生了什么事。
8.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堪。
9.After a great deal of toing and froing, I decided not to change jobs after all.
思来想去好久，我最终还是决定换工作。
10.The crank and connecting rod mechanism (CCRM) is often used in automatization machineries.It can transform circumrotation movement into to-and-fro beeline movement.
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。
11.In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.
12.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，青石板也被几代人的脚磨得光滑。
13.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。
14.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.
代表本软件的观点；若发现问题，欢迎向我们指正。
停地来回折腾，
发生了什么事。
惫
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。
