来回摇摆 meaning in English

oscillatevacillate

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。
She was just like , you know , cradling me and rocking me back and forth
她把我抱起来来回摇摆
The wake from the big ship made our boat rock back and forth
大轮船的尾流造成我们的小艇来回摇摆。
Much like a bowling pin that wobbles back and forth yet doesn ' t fall , a penguin ' s body is carried forward by kinetic energy
企鹅的身体非常类似一个来回摇摆却不会倒下的保龄球瓶，被动能带动向前。