The division between the prosperous west and the impoverished east remains.

富裕的西部和贫穷的东部之间的对立依然存在。

《柯林斯英汉双解大词典》

This river flows from west to east.

这条河由西向东流。

《新英汉大辞典》

She's walking east to west, and I west to east.

她从东到西走，我从西到东。

youdao

They are most commonly found in Europe, Africa and East and West Asia, as well as the Americas.

VOA: special.2009.05.05

These low mountains are cut by some valleys that sort of run east-west ; you will see one there, the Valley of Jezreel, in particular; that was a particularly fertile valley.

那些矮小的山丘被东西走向的山谷截断,你在这里会看到一个耶斯列山谷;,这是一个富饶肥沃的山谷。

耶鲁公开课 - 旧约导论课程节选

And then I go to the East River to go running, and I work in the West Village.

然后我去东河跑步，在西村工作。

洛杉矶和纽约不一样 - SpeakingMax英语口语达人

Which is just fine, as long as no one is trying to coordinate time east to west (or even west to east).

FORBES: How Technology Determines Time

If Manhattan's streets were perfectly laid out on an east-west grid, Manhattanhenge would occur facing both east and west on the vernal and autumnal equinoxes.

BBC: Just what is Manhattanhenge?

Gaffney, Jr. commended Secretary Mosbacher for his approach to East-West economic relations and called on the Administration to obtain greater alliance coordination in East-West economic and financial security matters.

CENTERFORSECURITYPOLICY: Center for Security Policy | Center For Security Policy Commends ��Mosbacher Principles�� On East-West Trade