"下午好" (xiàwǔ hǎo) in Chinese means "good afternoon."

In Engpsh, you can say "Good afternoon" to greet someone during the afternoon. This phrase is commonly used as a greeting from around 12:00pm to 6:00pm.

Here are some example sentences using "Good afternoon" in Engpsh:

Good afternoon, how are you doing today?
Good afternoon, may I speak with John?
Good afternoon, can I help you with anything?

Here are the Chinese translations for these example sentences:

下午好，今天过得如何？
下午好，我可以跟约翰通话吗？
下午好，我能为您做些什么？

The phrase "Good afternoon" is a formal way of greeting someone during the afternoon hours. It is commonly used in professional or formal settings, such as in a business or office setting. It is also appropriate to use when meeting someone for the first time or when interacting with someone you do not know well.