pneumatic tube system

例句：

1. 1.The pneumatic tube system is an efficient way to deliver documents quickly.
   气动管道系统是一种快速传递文件的有效方法。
2. 2.The pneumatic tube system was invented by a scientist named Dr. Smith.
   气动管道系统是由名叫史密斯的科学家发明的。
3. 3.The pneumatic tube system has been widely used in hospitals and offices for decades.
   气动管道系统在几十年来已被广泛应用于医院和办公室。