美夸克的英文：
beauty quark
bottom quark

And of course, “beauty is in the eye of the beholder.”
当然，我们每个人的审美观都有所不同。

A beautiful view greeted us.
美丽的景色呈现在我们面前。

The beauty of Dunhuang is unique in the world.
敦煌的美在世界上是独一无二的。

Any of a class of subatomic particles that are composed of quarks and take part in the strong interaction.
强子一种由夸克组成的基本粒子，参与强的相互作用

We shall see later that gluons are essential to the dynamics of the quarks inside the proton
后面将会看到，胶子对于质子内夸克的动力学机制来说是必需的。

The initial motion of the quarks right after the impact should have an effect on the ultimate position of the particles
在刚刚碰撞后夸克的初始运动对这些粒子的最终位置会有影响。

reach the bottom
到达底部

Get to the bottom of
弄个水落石出

Look, the bottom is bubbly!
看，鞋底有有很多泡泡呢！