Rudolph laughed and despite herself Gretchen had to laugh, too.是什么意思？

Rudolph laughed and despite herself Gretchen had to laugh, too.

鲁道夫笑了,而格丽卿也不由得笑了起来.

Rudolph

[男子名] 鲁道夫 Rudolf的变体昵称Rudy，[地名] [美国] 鲁道夫；

例句
Here, Burl lves sings Rudolph the Red Nosed Reindeer.
现在, 我们就来听听伯尔?艾夫斯演唱的《红鼻子驯鹿鲁道夫》.

laughed

v. 笑( laugh的过去式和过去分词 )，发笑，嘲笑，（特别表示因成功而）处于有利地位；

例句
The audience laughed and applauded...
观众边笑边鼓掌。

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。

despite

prep. 尽管，虽然，不由自主；

例句
The gentleman, despite his advanced years, helped Kathryn back to her seat.
这位绅士，尽管年事已高，仍然帮着凯瑟琳回到座位上。

herself

pron. （反身代词）她自己，（用以加强语气）她亲自，她本人；

例句
She was old enough to absent herself from the lunch table if she chose...
她长大了，可以自己做主不来吃午餐了。

Gretchen

n. 格雷琴(Margaret的昵称)(f.)；

例句
Once Gretchen had left the office, her doubts would return with a vengeance.
格蕾琴只要一离开办公室，她又会疑窦丛生。

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。

laugh

vi. 笑，发笑，嘲笑，（特别表示因成功而）处于有利地位；vt. 以笑表示，以笑感动[影响]；n. 笑，笑声，引人发笑的事或人，笑料；

例句
It's easy for a younger generation of critics to laugh Limon out of court...
年轻一代的批评家很容易对利蒙的观点一笑置之。

too

adv. 也，太，很，非常；

例句
The steep pavement was too narrow for them to walk abreast.
陡坡太窄，他们没法并排走。