越來

越來

"越來" means "increasingly" or "more and more."

Here, '越來越' represents an action or state intensifying over time, expressing the increasing enjoyment of reading.

我越來越喜欢读书。

I increasingly like reading books.

In this case, '越來越' is used to describe the gradual change in temperature, indicating the progressive cooling.

天气越來越冷了。

The weather is getting increasingly cold.

This usage of '越來越' shows the improvement in his ability to comprehend over time.

他越來越能够理解复杂问题。

He is increasingly able to understand complex issues.