Similarly the positively charged proton has a negatively charged antiparticle, the antiproton.是什么意思？

Similarly the positively charged proton has a negatively charged antiparticle, the antiproton.

同样的,带正电荷的质子具有其带负电荷的反粒子—即反质子.

similarly

adv. 相似地，类似地，同样，也；

例句
The great concourse of people seemed to have been similarly impressed.
这一大群人似乎也留下了同样深刻的印象。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

positively

adv. 明确地，断然地，肯定地；

例句
The bathroom, with its ancient facilities, is positively arctic.
该浴室设备陈旧，肯定非常寒冷。

charged

adj. 充满感情的，紧张的，可能引起激烈反应的；v. 填充；

例句
She was charged with abducting a six-month-old child.
她被控诱拐一个6个月大的孩子。

proton

n. [物]质子；

例句
At present nobody understands why these three quarks which are in the proton are bound together...
目前还没有人知道质子里面的这三个夸克为什么会结合在一起。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

negatively

adv. 否定地，消极地，取消地，负地；

例句
As these electrons are negatively charged they will attempt to repel each other.
因为这些电子都是带负电荷的，它们会互相排斥。

antiparticle

n. 反粒子，反质点；

例句
The particle - antiparticle concept is one of the most fascinating ones in physics.
粒子和 反 粒子是物理学中最迷惑人的概念之一.

antiproton

n. 反质子，负质子；