Also, tools can spread disease from one plant to another.

The scientists say the tenofovir gel was also effective against another sexually spread disease.

科学家表示，这种替诺福韦凝胶对另外一种性传播疾病也有效。

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Humans and animals can spread disease even though they show no sign of illness themselves.

人和动物可以传播疾病，即使他们自己没有表现出患病迹象。

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A discrete event system ( DES) is a kind of dynamic system which describe the evolves of the discrete events. The events whether occurs in systems operation are unknown, and they occur also at possibly unknown irregular intervals.

离散事件系统是描述离散事件演化的一类动态系统，这些事件在系统运行中是否出现是未知的，出现的时间间隔也是不规则的。

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At irregular time intervals, the planet's field reverses polarity: the North and South magnetic poles switch places.

每隔一段或长或短的时间，地磁方向就会反转：也就是北极和南极会互换位置。

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Occurring or appearing at usually irregular intervals.

通常是不定期的发生或出现。

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The administrative departments for public health shall, in accordance with the provisions of these regulations, periodically inspect and selectively check at irregular intervals the performances of safeguards for the occupational health in the workplaces where toxic substances are used.

卫生行政部门应当依照本条例的规定对使用有毒物品作业场所的职业卫生防护设备、设施的防护性能进行定期检验和不定期的抽查；

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As the tide made, it flapped heavily at irregular intervals against the shore. The Labour Party swept in on a tide of discontent over rising prices.

工党在对物价上涨不满的浪潮声中轻而易举地当选了。

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Here, the upper airway collapses at irregular intervals during sleep, possibly due to a lack of muscle tone in the throat lining, which triggers snoring.

在这种情况下，上呼吸道可能会因为喉衬缺少肌肉张力而在人们的睡眠中会不规律的塌陷，造成打鼾。

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At irregular intervals of two to seven years, the waters of the central Pacific warm up, heralding inclement weather throughout the southern hemisphere.

无规律地间隔二至七年，中央太平洋的海水温度就会升高，预示着南半球严酷的天气的到来。

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It will generate randomised latitude-longitude pairs at irregular intervals.

它将在不规则的时间间隔内生成随机的经纬度值对。

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There were signs saying "school fair" and "20 june" at irregular intervals along the road.

沿路距离不等地竖有“学校义卖会”及“6月20日”的告不牌。

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Content that never changes or that is updated at irregular intervals should not be included in adaptive updates.

从不更改的内容和不定期更新的内容不能包括在自适应更新中。

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The performance was repeated& once, twice, a third time at irregular intervals.

这一实验后来又重复了三次，每次间隔时间不一样。

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Not characterized by a fixed principle or rate; at irregular intervals.

有固定的规则或速率；间隔不固定，没有规律。

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The Global Position System ( GPS) radio occultation technique has emerged as a powerful and relatively inexpensive approach to sounding the global atmosphere in all weathers.

GPS无线电掩星探测技术已经发展成为一种强有力的、相对经济的观测全球大气的方法。

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As a global electromagnetic phenomenon, Schumann resonance is shown to be a sensitive temperature measure of global tropical atmosphere.

舒曼共振是一种全球性的电磁现象，它能敏感地反映整个热带大气的温度变化。

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We prove rigorously in mathematics the existence of global attractors of the atmosphere and the oceans.

在这篇文章中，我们从数学上严格地证明了大气整体吸引子、海洋整体吸引子及其二维准地转方程的随机吸引子的存在性。

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Meanwhile, because of global warming, the atmosphere on our own planet is getting too hot.

然而，因为全球气候变暖地球的环境温度日益升高。

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A study on the optimum algorithm of global ocean-atmosphere coupled models

海气耦合模式的优化方法研究

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In future, the model system will be coupled into the Global Environment Atmosphere Transport Model ( GEATM), to implement the bidirectional coupling system from cities to global scales.

未来，系统将集成到全球环境大气输送模式（GEATM），以实现从城市群到全球具有双向耦合功能的模式系统。

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