We don't know exactly what caused this explosion, what kind of device.

我们不清楚爆炸发生原因，也不知道哪种爆炸装置。

It's not clear what the motive for the bombing might be.

目前并不清楚爆炸。

The ministry says some 10,000 people have been evacuated. There is no word yet on the cause of the blasts.

国防部表示，近1万人已经得到疏散。目前还不了解爆炸起因。

How on earth did some of those cases not explode?

其中一些件到底如何不爆炸？

We don't understand the physics of what the Big Bang itself was.

我们并不理解大爆炸本身物理制。

We have no idea what those targets were, but they were in the direction of the airport and some military barracks.

我们不知道这些爆炸目么，但它们都从场和部分军营方向传来。

The theory was an attempt to explain the universe's expansion without the need for a big bang.

该理论试图在不依赖大爆炸情况下解释宇宙膨胀。

Her town was in trouble, and she needed to figure out a way to help it that didn't involve exploding potions.

她小镇有麻烦了， 她需要想出一种不涉及爆炸药水方法来帮助它。

While Pentagon Officials say they don't know what caused the missile tube explosion, they point out that Soviet missiles use highly volatile liquid fuel, and a fuel leak could have caused the eruption.

一些国防部官员表示他们不清楚导弹管爆炸原因，同时也指出，苏联导弹使用了稳定性极弱液体燃料，有可能燃料泄露导致了这次爆炸。

It was an explosion which never should have happened, and a subsequent inquiry laid the blame not on anyone who had actually been on the tanker at the time, but on the owners of the tanker.

这一起本不应该发生爆炸，随后调查没有将责任归咎于当时实际在油轮上人，而归咎于这只油轮所有者。