betti group

In chapter 2 we use harmonic 1-forms and discuss the relationship between an almost nonnegatively Ricci curved n-manifold with the first Betti number equal to n and a flat n-torus.

在第二章中我们利用调和1-形式研究了第一贝蒂数等于n且Ricci曲率几乎非负的n维黎曼流形和n维平坦环面之间的关系。

Wake up, Betty. Wake up, Betty.

贝蒂，醒来了。贝蒂，醒来了。

Betty, er, what do you call her, darling Betty?

贝蒂，呃，你叫她什么，宝贝贝蒂?

Jane: That's a good idea, Betty.

简: 好主意, 贝蒂。

What's your opinion, Betty?

贝蒂，你的看法呢？

Daming! Betty! Over here!

大明！贝蒂！这里！

Betty, Betty White. I'm glad to meet you.

贝蒂。贝蒂?怀特。很高兴见到你！

Betty： Hello. Sales Department. This is Betty Fields speaking.

贝蒂：喂，业务部，我是贝蒂_尔兹。

Betty sells shells on the back of a red shell.

贝蒂在红色贝壳的背面上卖贝壳。

Betty, John and Harry came to see him,

贝蒂、约翰、亨利都来看他，

She spoke her mind to Betty.

她向贝蒂吐露了心声。

Betty is a sedate girl.

贝蒂是个恬静的姑娘。

Betty, why are you stopping?

贝蒂，你怎么停下了？

Betty was very happy to get the gift.

贝蒂非常高兴收到礼物，

You are a good student, Betty.

贝蒂，你是个好学生。

Her parents, David and Betty.

她父母、大卫和贝蒂。

Does Betty like that programme?

贝蒂喜欢那个节目吗？

Betty was happy to hear that.

贝蒂听到这非常高兴，

Betty received many gifts.

贝蒂收到了很多礼物。