Literal waves of water were sending bicycles tumbling and rubbish bins floating .
表面的水波传送着翻滚的自行车和浮动的垃圾箱。
Everything from passing satellites and tumbling space junk to ground-based radar and even the ignition systems of nearby cars can generate spurious radio waves that confuse the software .
Have gymnastics ( balance beam and tumbling ) , potato sack races ( using pillow cases ) use your imagination , let the kids come up with some sports .
举办体操(平衡木和翻滚),发挥你的想象,让孩子们参与一些运动。
Around once every few 1 00000 years , chunks of rock more than three-fifths of a mile wide - the equivalent of about 12 new york city blocks - could come tumbling through the atmosphere causing much more serious problems , on a global scale .