1.
He sat rocking in his chair.
他坐在椅子上前后摇动着.
2.
Because it cost a dime to make it pitch back and forth, we had to sit on the horse once a week and to pretend we were riding.
要让马前后摇动起来得投进一角硬币，因此，我们只好每周一次干坐在马上，假装骑马来过过瘾。
3.
They waver while the latter stand firm, they equivocate while the latter are forthright.
前者动摇，后者坚定，前者暧昧，后者明朗。
4.
The act or an instance of wobbling; unsteady motion.
前后摇晃摇摆不定的动作或实例；不稳定的行动
5.
To move(something) back and forth steadily or rhythmically.
摇动前后稳定而有节奏地移动（某物）
6.
The ship lurched in the storm. The car gave a start and then lurched forward.
船只在暴风雨突然摇晃了起来。车子动了起来然后摇摇晃晃地向前开去
7.
supports someone swinging back and forth.
使某人能够前后地摇荡。
8.
He rocked a little to and fro, and chewed at his finger.
他轻轻地前后摇摇啃着他的手指。
9.
When swinging transmission machine operation, the force constant rotation axis to make efforts before and axial rotation move backward.
当摇摆传动机械运行时，等速旋转入力轴使出力轴向前和向后旋动。
10.
To hang loosely and swing or sway to and fro.
悬荡，垂着摆动松散地悬挂着而且来回摆荡或前后摇摆
11.
To move briskly and repeatedly from side to side, to and fro, or up and down.
摇摆轻快并重复地从一边到一边、前后或上下运动
12.
A rowing or paddling stroke in which the oar or paddle is pushed forward, used to check a boat's forward motion or move it backward.
倒浆把橹或桨向前推以阻止船向前运动或向后移动的一种划船或摇桨方式
13.
someone who sculls (moves a long oar pivoted on the back of the boat to propel the boat forward).
摇桨（摇动装在船尾的长橹来使船向前推进）的人。
14.
The pitman arm swings from one side to the other (or forward and Backward on some cars)as the steering wheel is turned.
转动方向盘时,转向摇臂从一侧摆动到另一侧(在某些汽车上是前后摆动)。
15.
The bushes snapped back and forth in the wind.
灌木随风前后摇摆，啪啪作响。
16.
He seemed nervous, swaying to and fro.
他显得很紧张，身子不停地前后摇摆。
17.
The troops staggered under the severe gun-fire.
在激烈的炮火面前，部队动摇了。
18.
He sat rocking (himself) in his chair.
他坐在椅子上前後摇动着.