The offer seems to be on the up and up.

出价似乎越来越高。

《牛津词典》

The club has been on the up and up since the beginning of the season.

从本季开始，这个俱乐部便日益欣欣向荣。

《牛津词典》

You can take his word for it. He has always been on the up and up.

你可以相信他的话， 他一向老实可靠。

《新英汉大辞典》

It went up and up. I followed the trail for several hundred meters more until I came to the mouth of a large cave.

VOA: special.2010.07.10

If you think of these kind of like trays in a cafeteria, right, that are kind of upside down, and by default, they're stacked from the floor on up and up and up.

如果你想象这种自助餐厅的托盘，对的，那有点混乱的，默认的，它们从地板开始往上堆起来。

哈佛公开课 - 计算机科学课程节选

and you just see the millions going up and up and up and up and it's all generated for charities.

你能看到百万位的数字往上涨啊涨啊涨啊涨，它们都是为慈善募集的。

英国的慈善事业 - SpeakingMax英语口语达人

The cost for businesses of health care have been going up and up and up.

WHITEHOUSE: Town Hall Meeting on the Economy

Fossil CH4 is quick and easy to set up and get up and running.

FORBES: Profile of An Energy Revolution: Japan

While I was in college, I kept watching real estate prices go up, up and up.

FORBES: How I Bought A House At 21 -- And Why It Was A Mistake