They're tangled like balls of loose twine.

它们缠绕在一起，就像松散的线球。

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They're intertwined like balls of loose twine.

它们缠绕在一起，就像松散的线球。

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A tremendous number of particles constituting the gas are moving in all directions. They bombard the walls and the piston, bouncing back like balls thrown against a wall.

构成气体的数量极大的粒子是向各方面运动的，它们撞击容器的壁与活塞，撞了又跳回来，正如掷到墙上的球一样。

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In the U.S., some toys,like small rubber balls, must carry warning labels.

VOA: standard.2010.02.23

It is like an elastic collision between billiard balls.

就像是台球在，台球桌上发生弹性碰撞。

麻省理工公开课 - 固态化学导论课程节选

They launched themselves like Superman, drank floating globs of water and tossed each other around like balls, in addition to performing a variety of experiments.

CNN: Teachers take weightless ride to inspire students

Balance equipment such as Bosu balls, which look like exercise balls cut in half, "Indo Boards or DynaDiscs are all good tools, " Mr. Dean says.

WSJ: For the Love of Surfing and Wine Country

Others look like enormous balls of gas, much bigger than Jupiter, or like huge spheres of ice, similar to Neptune.

NPR: Astronomers Find Planet with Similarities to Earth