It looks more like a rugby ball.

它看起来更像一个橄榄球。

Many had never touched a rugby ball a few years ago.

许多人在几年前从未接触过橄榄球。

And when they returned home, they took some rugby balls with them.

他们回国时带了一些橄榄球。

It only works on objects that are cylindrically symmetrical like a football or a rugby ball.

它只适用于柱对称的物体，如足球或橄榄球。

The Earth's gravity acts on the moon and stretches it out into a kind of rugby ball shape.

月球在地球引力的拉伸作用下变成类似橄榄球的形状。

Like this boat, this rugby ball, a table saw, and even glasses made out of rubber from the seat.

比如船，橄榄球，台锯，甚至还有座椅橡胶制成的眼镜。

It's like a rugby ball, or what?

就像橄榄球，还是什么？

Nuclei really can be understood as little balls, and that's more or less correct, though when you get to some of the bigger, less stable ones they start looking more oblong and weird like a rugby ball.

原子核真的可以理解为小球， 这或多或少是正确的，尽管当你看到一些更大、更不稳定的原子核时， 它们开始看起来更长， 更奇怪，就像一个橄榄球。