primer-safety fuze

例句：

1. 1. The primer-safety fuze is designed to ensure the safe operation of the engine.
   初级安全装置旨在确保发动机的安全运行。
2. 2. The primer-safety fuze is a crucial component of the ignition system.
   初级安全装置是点火系统的关键组成部分。
3. 3. The primer-safety fuze was developed to prevent accidents caused by improper use of the engine.
   初级安全装置被开发出来，以防止由于不当使用发动机而导致的事故。