"The desk is very old" is a good way to describe a desk that is old in Engpsh. This phrase uses the adjective "old" to describe the condition of the desk. The adjective "old" refers to something that has existed for a long time, and is often used to describe objects that have been around for a long time and show signs of age, such as wear and tear, fading, or discoloration.

The word "desk" is a noun that refers to a piece of furniture with a flat top and usually drawers or compartments for storing things. A desk is often used for writing, reading, or working at a computer.

Here are some examples of sentences using the phrase "the desk is very old" in Engpsh, along with their translations in Chinese:

"I inherited this desk from my grandmother. It's very old, but still in good condition." (我从我的祖母那里继承了这张课桌。它很旧，但仍然保存得很好。)
"I can't bepeve how old this desk is! It must be at least 50 years old." (我真不敢相信这张课桌有多旧！它肯定有至少50年了。)
"I love the character and history of this old desk. It's not in the best shape, but it has a lot of charm." (我喜欢这张旧课桌的个性和历史。它不是保存得最好，但它有很多魅力。)