Su-17

例句：

1. 1. The Su-17 is a state-of-the-art fighter jet.
   苏-17是一种最先进的战斗机。
2. 2. The Su-17 has been upgraded to carry more fuel and weapons.
   苏-17已经被升级，可以携带更多的燃料和武器。
3. 3. The Su-17 is used by the military for strategic bombing missions.
   苏-17被军方用于战略轰炸任务。