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All at once he was tumbling down a flight of stairs .

正当时，他就从楼梯翻滚而下。

Tumbling could send blood rushing to one end or the other .

翻跟头会让他的血液从一端流到另一端。

Years of continual tumbling and scouring by surf and sand have rounded off any rough edges .

持续多地经过海浪和泥沙的翻滚和冲刷，使石块上各个粗糙的边缘都被磨损得光滑圆润。

Azure water , golden sand beaches , granite peaks and tumbling waterfalls make this region a photographer 's heaven .

蔚蓝的水，金色的沙滩，花岗岩山峰和翻滚的瀑布使该地区成为摄影师的天堂。

His carriage and two others peeled off the tracks , tumbling sixty-five feet to a field below .

他所在的车厢和另外两节一同脱轨，翻滚着掉到20米下方的田地里。