An ageing nuclear reactor is an accident waiting to happen.

老化的核反应堆早晚会出事故。

Results No bleeding,difficulty in removing the canular,unclosed fistula and pneumothorax happened.

结果所有患者无术后出血、拔管困难、瘘口不愈、气胸等并症。

There is no saying what may happen.

简直不知今后情况会怎么样。

A TV playback showed exactly what had happened.

电视播放的录像原样显示了所的事。

Tomato bacteria diseaes rifely happen abroad which affect production deeplly.

番茄细菌性病害在国外普遍,对产上威胁较大。

Conventional wisdom has it that riots only ever happen in big cities.

按常理说，只有大城市才会暴乱。

Everyone was sworn to secrecy about what had happened.

大家都誓对所的事缄口不言。

He happened on the book in a secondhand bookstore.

他在旧书店里然现了这本书。

He was oblivious of what was happening.

他已经忘却什么事了。

Memories lie behind of all that has happened.

大家都记得以前过的事情。

They rushed to see what was happening.

他们冲出去看了什么事。

Something must have happened to her. She has been sitting there musing for hours.

"她一定是有什么事了,一连几小时坐在那里沉思默想。"

He jogged out to see what happened.

他慢吞吞地走出去看外边了什么事。

Seemingly, we can do nothing to prevent this from happening.

我们似乎没有什么办法阻止这件事。

Give me your observations on what's happened.

把的事情给我报告一下。

I happen to have got to windward of the young woman.

我碰巧占了那位年轻女子的上风。

A funny thing happened in the subway yesterday.

昨天地铁里了一件有趣的事。

It’s theoretically possible, but highly unlikely ever to happen.

这从理论上说是有可能的，但是基本上不会。

I simply couldn't comprehend what had happened.

我简直不明白了什么事。

God forbid that this should happen to anyone ever again.

上帝不容这类事在任何人身上重演。