Janis and Kurt have announced their engagement.是什么意思？

Janis and Kurt have announced their engagement.

贾尼斯和库尔特已宣布订婚。

Janis

n. （女名）詹妮丝，[人名] 贾尼斯；

例句
Patti Smith and Janis Joplin did it all years ago and they were women with attitude and talent.
帕蒂·史密斯和詹妮斯·乔普林多年前就这样做过，她们当时是两位个性鲜明的才女。

and

conj. 和，与，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多钱购买昂贵的首饰和衣服。

Kurt

库尔特（男名）；

例句
'It was incredible,' Kurt says, suddenly aglow.
“简直难以置信，”库尔特突然满面红光地说。

have

aux. 用以构成完成式及完成式的不定式，表示已经…；vt. 有，具有，拿，取得，从事，必须，不得不；n. 〈口〉有产者，有钱人，富国，〈英俚〉欺骗，诈骗；

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

announced

v. 宣布（ announce的过去式和过去分词 ），通知，广播，声称；

例句
The subject of the talk is announced a week in advance.
会谈的主题已提前一周宣布。

their

pron. 他（她，它）们的，在提及性别不详的人时，用以代替 him 或 her；

例句
Their permissiveness toward their children reflects the wild abandon of their own lives.
他们对孩子的放任折射出他们自身生活的放浪形骸。

engagement

n. 订婚，婚约，约会，约定，契约，雇用，参与度；

例句
She was planning to announce her engagement to Peter...
她正计划宣布她和彼得订婚一事。