By contrast意思

"By contrast" is a prepositional phrase in English that is used to introduce a comparison, especially one that highlights a contrast or difference between two things. It suggests that the second thing being discussed is different from the first in some significant way. Here's an example of how it might be used in a sentence:

"The small, quiet town was popular among retirees, by contrast to the bustling city that attracted young professionals."

In this sentence, "by contrast" is used to emphasize the difference between the quiet town and the busy city. It suggests that these two places are fundamentally different, and that their appeal to different demographic groups is a result of these differences.