英语语法分析

A quark cannot exist on its own, but must be bound to other quarks or an antiquark.

一个夸克不能单独存在，必须与其它夸克或反夸克结合在一起。

Nobody knows if it is possible to cut an electron or quark but particle physicists keep trying.

没有人知道分解电子和夸克是否可能，但粒子物理学家们一直在尝试着。

All 16 known constituents, from the humble electron to the esoteric top quark, have now turned up.

所有16种已知成分，从普普通通的电子到晦涩难懂的顶夸克都一一冒了出来。