The air crash took place because a screw on the plane's wing came loose.

空难发生的原因是机翼上的一根螺丝松了。

Suddenly there was such a violent earthquake that the foundations of the prison were shaken. At once all the prison doors flew open, and everyone's chains came loose.

忽然地大震动，甚至监牢的地基都摇动了，监门立刻全开，众囚犯的锁链也都松开了。

15 months that we had to deal with the lawyers from the Navy, because if one of those cameras came loose, there were liability, the actor could get hurt.

我们不得不与海军的律师打交道 15 个月，因为如果其中一个摄像机松动，就有责任，演员可能会受伤。