“沪七条”政策效果不断显现，上海楼市迎来企稳迹象

不断 placed before a verb means an action or change keeps happening again and again or continues over time. It is often used in formal or written Chinese to describe ongoing development or repeated change.

创下 is used to say that something has reached and established a new result, record, high point, or achievement. It is common in news and data reporting.

因……而…… is a formal pattern showing cause and result. 因 introduces the reason, and 而 connects it to the result. It is common in written Chinese and news reports.

This pattern contrasts two things: the first is described as only a preliminary or less important stage, while the second is presented as the real, key, or main stage. It helps emphasize progression or contrast.

有望 means there is hope or a good chance that something will happen. It is often used in formal contexts to express positive expectation about future development.