当一个地方被比喻为 a hive of activity 时，要表达的意思是此处看上去非常忙碌，一片繁忙的景象。

例句

La Bouqueria market is a hive of activity on a Saturday morning, with vendors selling all sorts of food and drink.

Welcome to the department! It's a real hive of activity, but don't worry, you'll soon get the hang of it.

London was a hive of activity over the summer, with lots of tourists and spectators who came to see the Olympic games.

请注意

如果一个地方人特别多，场面热热闹闹，这时可以用 buzzing 来形容此地。

例句

The nightclub was packed with people last night; it was really buzzing.