Is it a bouncing ball or a circle on an elevator?

只不过是个跳动球或是 电梯中跳动的圆圈？

The very first view of a bouncing ball must have been extremely disconcerting-this round object, defying gravity and shooting around in random directions.

一个有弹性的圆球，似乎完全无视地心引力，可以向任何方向弹射: 第一次见到这种物品必定会惊讶万分。

Before the pandemic, he was boisterous and talkative, his parents say-a bouncing ball of energy who never kept quiet, and rarely remained still.

他的父母说，在疫情爆发前，他是一个活泼健谈的孩子，从不保持沉默，也很少静止不动。

The kids were bouncing a ball against the wall.

【bounce】孩子们对着墙打球。

Everything is hard, she said, bouncing the ball, especially for someone your age.

一切都很困难，她一边弹着球一边说，尤其是对于你这个年纪的人来说。

But long before that, really, the history of the modern world was best told through the bouncing white ball.

但在此之前很久， 实际上，现代世界的历史最好通过弹跳的白球来讲述。

" Dribbling" (dribbling) means bouncing the ball continuously, back and forth from your hand to the ground, without actually holding the ball steady.

“运球”（dribling）是指不断地把球从你的手上来回地弹到地上，实际上并没有把球稳稳地握住。

In tests, once the AI learns the specific properties and relationships, it is able to predict the behavior of falling strings and bouncing balls in a box.

在测试中， 一旦 AI 了解了特定的属性和关系，它就能够预测盒子中掉落的绳子和弹跳的球的行为。

In physics, you can understand a bouncing ball as a nearly uncountable multitude of fundamental particles, each with its own wave function, and all held together by different kinds of forces at the quantum scale.

在物理学中，我们可将皮球视为无数基本粒子，每个基本粒子都有自己的波函数，各种超短距作用力将这些粒子结合成一个球。