occur

If these drugs are stopped abruptly then some withdrawal symptoms may occur.

如果突然停服这些药，则可能出现一些戒断症状。

When vacancies occur, the office puts out feelers to the universities.

有空缺职位的时候，办事处就到各个大学去打探。

Changes in temperature occur slowly and are constrained within relatively tight bounds.

温度变化缓慢，而且局限在相对较小的范围内。

Keep a pad handy to jot down queries as they occur.

手边放一本便笺簿，以便有问题时随时记下。

Curiously, the word "gay" does not occur in the index.

奇怪的是，gay这个词没有出现在索引当中。

The strength of altruism lies in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

毫无疑问,利他主义存在于任何社会,而且道德准也普遍提倡利他主义或善良行为,而谴责自私自利.这也正是利他主义具有强大生命力的原因.

Emergency cooling systems could fail and a reactor meltdown could occur.

紧急冷却系统有可能失灵，核反应堆有可能发生堆芯熔毁。

Unless you respect other people's religions, horrible mistakes and conflict will occur.

如果不尊重别人的宗教信仰，就会祷下大错，酿成冲突。

Nitrates are chemicals that occur naturally in water and the soil.

硝酸盐是水和土壤中自然存在的化学物质。

I have known dramatic changes occur in the space of a few minutes with this method.

我知道用这种方法短短几分钟之内就能够产生急剧的变化。

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.

Revolution can only occur at a time when both internal and external conditions of a country are ripe enough.

一个国家的革命只有在内部与外部条件成熟时才能发生.

About two in every five epileptic fits occur during sleep.

每5例癫痫病中约有两例是在睡眠过程中发作的。

Ulcers occur when the stomach's natural acids eat into the lining of the stomach.

胃酸侵蚀胃内壁引发溃疡。

By noticing these changes, the woman can tell when ovulation is about to occur.

女性通过留心这些变化就能判断排卵的日期。

Frosts often occur in November.

11月份经常出现霜冻.

Three vacations occur in the course of the year, viz, two weeks at Christmas, ten days at Easter and the usual two months in summer.

一年中有三个假期, 即圣诞节两周, 复活节十天以及通常的两个月暑假.

If any bright thoughts occur to you pass them straight to me. Have you got any?

你有什么高见就立马告诉我。现在有吗？

The word " gratitude " did not occur in his words.

“ 感激 ” 两字在他的话中是见不到的.

Chemical transformations occur.

发生了化学转换。

Didn't it occur to you to close the window?

难道你没有想到去关窗户 吗 ?

Opportunities for learning occur spontaneously every day.

学习的机会每天都会自然而然地出现.

There will come a time when the crisis will occur.

危机总有一天会爆发。

It did not occur to me to check my insurance policy.

我没有想到要核实我的保险单条款。

Misprints occur on every page.

每一面都有印刷错误.

Food shortages often occur in time of war.

在战争期间常常发生粮食短缺的情形.

An explosion will probably occur at any minute.

炸弹随时可能爆炸.

No one has suggested how this might occur.

没人说得清这事是怎么发生的。

When exactly did the incident occur?

这一事件究竟是什么时候发生的？