The clavichord which my grandfather bought years ago was damaged.是什么意思？

The clavichord which my grandfather bought years ago was damaged.

我祖父多年前买的古钢琴被损坏了.

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。

clavichord

n. 击弦古钢琴；

例句
Our clavichord is kept in the living room.
我们的击弦古钢琴是放在起居室里的.

which

pron. 哪一个，哪一些，哪个，那，指前面提到的事物；adj. 哪一个，哪一些；

例句
...the latest date at which a foetus can be aborted.
能够打胎的最迟日期

my

adj. 我的(I的所有格形式)；int. 啊呀，天啊；

例句
Racial discrimination is abhorrent to my council and our staff...
我的顾问班子和全体工作人员都对种族歧视深恶痛绝。

grandfather

n. （外）祖父，始祖；vt. 新规定限制，不受新条例；

例句
His grandfather was a Muslim cleric.
他的祖父是一名穆斯林阿訇。

bought

v. 购买，购得( buy的过去式和过去分词 )，做出牺牲以获得，够支付，买通；

例句
He bought two bottles of vodka on account.
他挂账买了两瓶伏特加酒。

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；

例句
His wife was sentenced to seven years imprisonment for aiding and abetting him...
他的妻子作为他的从犯被判入狱7年。

ago

adv. 以前，过去的，之前；

例句
He was killed a few days ago in a skiing accident...
几天前他在一场滑雪事故中丧生。

was

v. 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（ be的过去式 ），在，存在，不受干扰；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲伤。

damaged

adj. 被损坏的；v. 损害，毁坏，加害于( damage的过去式和过去分词 )；

例句
The bomb destroyed a police station and badly damaged a church...
炸弹摧毁了一处警察局，并使一座教堂严重受损。