"Very many trees" can be translated as "非常多树" in Chinese. The phrase "very many" is an adjective that means "a great number of" or "a large quantity of." It is often used to describe a large quantity of something, such as people, animals, or things.

Here are some examples of the phrase "very many" in Engpsh:

There are very many trees in this forest. (这片森林里有很多树。)
There are very many people at the concert. (音乐会上有很多人。)
There are very many different species of birds in this region. (这个地区有很多不同种类的鸟。)

The phrase "very many" can also be used in a more casual way, such as saying "There are a ton of trees in this forest" or "There are so many people at the concert." These phrases are similar in meaning to "very many," but they are more casual and less formal.