強子是由兩個或多個夸克組成的粒子，
例如質子和中子，各有三個夸克，
π 介子和 K 介子有兩個夸克

正如分子是由透過電力結合在一起的原子組成一樣，
強子也是由透過強力結合在一起的夸克組成。


Hadrons are particles consisting of two or more quarks
examples are the proton and neutron, with three quarks each,
and pions and kaons with two quarks.

Just as molecules are composed of atoms
held together by the electrical force,
hadrons are composed of quarks
held together by the strong force