rocking motion

基本解释

The rocking motion may allow your pelvis to move and encourage the baby to descend.
搖擺晃動可以改變你的骨盆竝幫助你的寶寶下降。
A man with mirth is like a chariot with springs, in which one can ride over the roughest roads and scarcely feel anything but a pleasant rocking motion.
而歡樂的人就像一輛裝有彈簧的戰車，無論形式在多麽崎嶇的路上，帶給車可的也衹有舒適輕微的搖擺，而無任何不適。
blog.sina.com.cn
Robin brought champagne. I had a fresh croissant from Belle Epicurean, an authentic French bakery in Seattle, a good book and 36 hours of rhythmic, rocking motion before I reached Los Angeles.
蘿賓拿來了香檳，我從西雅圖最地道的法式麪包房買了新鮮的羊角麪包，帶了一本好書，期待著到達洛杉磯前36個小時行車中有節奏的晃動。

For renewable energy on a smaller scale, a graduate student in Israel developed a prototype for an elegant rocking chair called Otarky that produces energy from its rocking motion and can be used to charge devices and power a lamp.
ENGADGET: Inhabitat's Week in Green: GPS shoes, shape-shifting bicycle and a wheelchair helicopter
We also showcased several innovations from the intersection of fashion and technology -- a light-up Twitter dress, a pair of "Social Denim" jeans that let you update your Facebook status on the fly and a brilliant "Rocking Knit" chair that uses kinetic energy generated from the chair's gliding motion to knit a winter hat while you sit.
ENGADGET: Inhabitat's Week in Green: Dyson Spheres, bladeless wind turbines and airless bike tires