1. 中午好：早上好 Good morning. | 中午好 Good afternoon. | 晚上好 Good evening.

2. (您好)：excuse me. (对不起了) | good afternoon. (您好) | good evening. (晚上好)

1. （问候用语）下午好
You say 'Good afternoon' when you are greeting someone in the afternoon.

noun

1. a conventional expression of greeting or farewell

Synonym: afternoon