Last year, a B-52 bomber mistakenly carried nuclear weapons from one US air force base to another.
去年，一架B-52轰炸机误带核武器从美国的一个空军基地飞往另一个空军基地。
But on the other hand, in the strategic nuclear weapon constitution, compares with the formidable bomber aircraft strength, the missile quantity was very little.
但另一方面，在战略核武器构成上，与强大的轰炸机力量相比，导弹数量微乎其微。
The disclosure is the latest embarrassing episode for the airforce, which last year had to explain how a bomber mistakenly carried six nuclear missiles across the US.
以上披露的情况，是令美国空军尴尬的最新一起事件。去年，由于美军的一架轰炸机误携6枚核弹头导弹穿越美国本土，空军方面不得不对此作出解释。