"Three empty" can be translated to "三个空" in Chinese. The phrase "empty" refers to something that is not filled or occupied, and the word "三个" (three) is used to indicate the quantity of the empty things.
This phrase can be used in various contexts to describe something that is not filled or occupied, such as "三个空房间" (three empty rooms) or "三个空瓶子" (three empty bottles).
Example:
"The shelves were pned with three empty boxes." (架子上放着三个空盒子)
"He counted three empty seats on the bus" (他在公交车上数了三个空座位)
"There were three empty slots on the parking lot" (停车场上有三个空车位)