An explosion will probably occur at any minute.

炸弹随时可能爆炸。

Who was at the helm when the collision occurred?

当碰撞发生时,谁在掌舵?

The word “gratitude” did not occur in his words.

“感激”两字在他的话中是见不到的。

Police said that the blast occurred at 9 a.m.

警方说这次爆炸发生在上午九点。

Surgery is the only choice of treatment if aspiration pneumonia, mediastinitis or other infections occur.

一旦病患感染症状时，手术治疗是唯一的选择。

A seismoscope is an apparatus or device which only indicates that an earthquake has occurred.

验震器是仅仅指示震发生的仪器或装。

I hope this won't occur again.

望不要再发生这种事情。

Opportunities for learning occur spontaneously every day.

学的机会每天都会自然而然。

Very often tragedies or near tragedies occurred.

悲剧或近乎悲剧的事经常发生。

A startling cultural transformation occurred in post-war Britain.

战后英国的文化了令人惊讶的变化。

I hope no accident has occurred to him.

望他没什么事。

It occurred on the morning of the fifteenth.

事情发生在15号的上午。

A new outbreak of smallpox occurred in 1928.

1928 年爆发了新一轮的天花。

The usual bipyramid-shaped parasporal bodies occur in Lepidoptera-active strains.

一般双金字塔形伴胞体形成于鳞翅目活性株。

When melasma occurs, melanocytes in certain areas overproduce melanin.

当发生黄褐斑，黑色素细胞在某些领域产生过量黑色素。

Mental and physical deterioration both occur naturally with age.

随着年龄的增长，心智和体力自然衰退。

The child's birth occured at 2 a. m.

这孩子凌晨两点生。

Such disparagement of anthropomorphism occurred in the ancient world, too.

例如，凯尔特人就看不起腊人的这种做法。

Hypnagogic hallucinations may occur in this state, especially auditory ones.

由于造梦者的而且确仍然身处梦中，这个象被称为「假清醒」。

Signomial geometric programming(SGP)problems often occur in engineering design and management.

符号几何规划(SGP)问题经常在工程设计和管理中。