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》

The chairs tilt back so that it is easy to look up and watch a movie projected on the ceiling.

VOA: special.2009.03.11

The evolutionary model is, I think, responding to, and picking up on, the fact that in many respects, Yahweh resembles the gods of Israel's neighbors.

进化模型，我认为，回应了或者说挑选了这个事实，在很多方面，耶和华与以色列邻国的神灵相似。

耶鲁公开课 - 旧约导论课程节选

but I made up for it by working really hard on the gym and working really hard on the field.

但我通过体育馆和足球场上的刻苦训练弥补了天赋不足。

足球部队长的领导力 - SpeakingMax英语口语达人

In other words, things are on the up and up.

FORBES: Beating Up On The Small Gal.

To keep things on the up and up, he got approval from his client to represent the contractor and he refused to collect a fee from his collections client.

FORBES: Evolve Or Die

In my opinion, if the owners were truly ready to get this deal done and were on the up and up, they would have included the new CBA in the settlement.

FORBES: NFL Lockout: Why the Players Haven't Voted