procedure call

例句：

1. 1. The program is designed to help users navigate through the system.
   这个程序旨在帮助用户导航系统。
2. 2. The procedure call was made by the computer system.
   程序调用是由计算机系统发出的。
3. 3. The user needs to follow the procedure call instructions carefully.
   用户需要仔细遵循程序调用指示。