The injured dog had to be destroyed.是什么意思？

The injured dog had to be destroyed.

这只受伤的狗要予以人道毁灭。

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。

injured

adj. 受伤的，受损害的，损伤感情的；v. 损害(injure的过去式)，伤害（名誉、自尊等），（尤指在事故中）伤害，使受伤；

例句
The injured were airlifted to hospital in Prestwick...
伤者被空运送往普雷斯特维克的医院。

dog

n. 狗，蹩脚货，丑女人，卑鄙小人；v. 困扰，跟踪；

例句
He dropped his sausage on the pavement and someone's dog ate it, mustard and all.
他把香肠丢在人行道上，不知是谁家的狗将香肠甚至连带芥末都吃个了精光。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

be

v. 是，有，存在，做，成为，发生；aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质；

例句
The older child should be able to prepare a simple meal...
那个年纪稍大的孩子应当会做一顿简单的饭菜。

destroyed

v. 破坏( destroy的过去式和过去分词 )，毁灭，消灭，杀死；

例句
Weeks of aerial bombardment had destroyed factories and highways...
数周的空中轰炸已经摧毁了许多工厂和公路。