stratosphere bomber

例句：

1. 1.The stratospheric bomber was a major weapon in the war.
   平流层轰炸机是战争中的主要武器。
2. 2. The stratospheric bomber was used to drop bombs over enemy territory.
   平流层轰炸机被用来在敌占区投放炸弹。
3. 3. The stratospheric bomber was a symbol of technological advancement.
   平流层轰炸机是技术进步的象征。