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What we anticipate seldom occurs; what we least expected generally happens.~Benjamin Disraeli

我们预料会发生的事通常不会发生，我们最不期待发生的事多数成事。

When light occurs at night," he says,"it has a very disruptive influence.

当光发生在夜间，"他说，"它有一个非常有破坏力的影响。

The domestic forest fire accidents occurs frequently, which has a devastating disserve to our society and caused a serious loss to our economy. Forest fire resulted in a lot of forest resource was burnt, the entironment and zoology balance were effected, industry and agriculture production were influenced directly, sometimes even reduced the people's life and property in a low safety situation.

国内森林火灾事故的频繁发生，其破坏性危害对社会影响极大，给我国的经济造成了相当严重的损失，森林资源大量烧毁，自然环境和生态平衡受到影响，直接影响工农业生产，甚至威胁人民的生命财产的安全。

It's a distressing thing for the phenomenon which occurs around the world.

这是一个现象，世界各地发生的令人痛心的事情。

Overtraining is defined as a fatigue syndrome which means that the normal level of performance can not recover after intensive training, Overtraining mainly occurs in endurance events and its occurrence is related to the disturber of neuroendocrine system and immune system.

过度训练是指大强度运动后，长时间不能恢复运动能力的一种疲劳症状，它的产生与神经内分泌系统、免疫系统的功能紊乱有关。

The first recorded use (1625) of ditto occurs in English in such a construction.

ditto 一词的最初有记录的用法1625年）出现在英语的这种结构中。

The exposure and transfer apparently occurred at horse racing tracks, where dog racing also occurs.

该病毒显然是由赛马场传出的，因为在那里经常也会举行犬赛。

It occurs at the contact between the white dolomite and the grey slate/shale of the Stephen Formation.

它发生在接触白色白云石和灰色的石板/页岩的斯蒂芬形成。

The first part presents develops of predator-prey systems and gives the model that is investigated in our paper; Chapter 2 presents the results on boundedness of solutions and permanence of system; In chapter 3, we explicitly derive a domain of attraction for the positive equilibrium of system by using Liapunov method; The local stability and the conditions that Hopf bifurcation occurs are obtained in chapter 4; In chapter 5, some explicit fomulae of the direction of Hopf bifurcation and the stability of bifurcating periodic solutions on the center manifold are determined,using normal form and center manifold introduced by Hassard et al; In chapter 6, some numerical simulations are performed to illustrate the analytical results found; Our paper ends with a brief conclusion.

全文共分七章，第1章对捕食-食饵系统的发展背景做了介绍并给出了本文研究的模型；第2章讨论了系统的保持性和解的有界性；第3章研究正平衡点的全局性质，对正平衡点的吸引域进行了精确估计；第4章研究了系统的正平衡点的局部稳定性和Hopf分支存在的条件；第5章利用规范型和中心流形定理得到了一个决定Hopf分支方向、分支周期解的稳定性及其他性质的精确公式；第6章对一个具体模型进行了数值模拟；第7章对全文进行了总结。

Occurs to the eastern Houshiding overturned anticline of Fuping complex domal uplift, Pingyang gneissic granite, a trondhjemite looks like a domal anticline in the west part and becomes two sub-anticlines overturned to south in the east part.

岩体的西部似一穹状背斜，向东逐渐转变为两个向南倒转的次级背斜，总体上为向南倒转的复式背斜的核部，其产状及其面理构造与区域构造线完全一致。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。