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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。

Eye-spots on several fossils discovered from Inner Mongolia and Liaoning Province are described, which are arranged to Kalligrammatidae, Neuroptera. Based on the research about mimicry of living insects and behavior of extant neuropteran, we suppose that mimics could play an important role for surviving of kalligrammatids in Mesozoic, might thunder against the predator or lure the prey.

对新近发现于内蒙古和辽宁的多块脉翅目丽蛉科化石上的眼斑进行了描述，根据现生昆虫的拟态及现存脉翅目昆虫的行为特点，分析了丽蛉在进化上出现的拟态现象在当时的古生态环境中可能起到恐吓捕食者和引诱猎物的作用。

Father, thy word is past, man shall find grace; And shall grace not find means, that finds her way, The speediest of thy winged messengers, To visit all thy creatures, and to all [ 230 ] Comes unprevented, unimplor'd, unsought, Happie for man, so coming; he her aide Can never seek, once dead in sins and lost; Attonement for himself or offering meet, Indebted and undon, hath none to bring: [ 235 ] Behold mee then, mee for him, life for life I offer, on mee let thine anger fall; Account mee man; I for his sake will leave Thy bosom, and this glorie next to thee Freely put off, and for him lastly dye [ 240 ] Well pleas'd, on me let Death wreck all his rage; Under his gloomie power I shall not long Lie vanquisht; thou hast givn me to possess Life in my self for ever, by thee I live, Though now to Death I yield, and am his due [ 245 ] All that of me can die, yet that debt paid, Thou wilt not leave me in the loathsom grave His prey, nor suffer my unspotted Soule For ever with corruption there to dwell; But I shall rise Victorious, and subdue [ 250 ] My Vanquisher, spoild of his vanted spoile; Death his deaths wound shall then receive, and stoop Inglorious, of his mortal sting disarm'd.

父亲啊，您的话一言为定，人将蒙受恩惠；何不想方设法派遣您飞得最快的长翼的使者去遍访你的一切生灵，叫他们都前来领受幸福，不受阻挠，不等哀求，也不用请愿！这样前来的人们，真值得庆幸！否则，一判死罪，而且沉沦，便永远不得救助；负债而破产，连赎买自己的东西都没有了。那好吧，请看我，我要以自己的生命，救赎他们，请把怒气发在我身上；把我当做凡人看，我要为凡人而离开父亲的怀抱，情愿抛弃仅次于我父的光荣地位，甘愿为他终于一死；任凭'死'把他全部的愤怒都发泄在我身上。在他的黑暗统治下，我不会永远屈服；您既给了我生命，永远为我所有，我因您而活，虽然如今我让步于'死'，凡我应当死的一切，都归他所有，但别让我所还的债，作为他的食饵，却把我遗留在令人憎恶的坟墓里，别让我纯洁无瑕的灵魂，永远住在坟茔里，与腐朽同居。我将要胜利而再起，制伏我的征服者，夺取他所夸耀的战利品。那时，'死'将受到致命的创伤，他那致命的毒刺将被拔掉，他的武装将被解除，他会大大丢脸。

A falconer with ahorse is gazing at the bird on his arm with all the intensity a man canmuster when trying to impose his will on a bird of prey.

一个狩猎者站在马边，紧紧盯着停在他手臂上的鸟，他的眼神表明他正竭尽全力，将自己的意念集中在猎物身上。

The bugs are feeding on the captured prey and place their droppings on the leafes of Roridula.

猎椿以捕虫树捕获的昆虫为食并将其排泄物留在捕虫树的叶片上。

Hence, researches on influences of Allee effect s and Allee-like effects at different spacial scales on predator-prey interactions appear very important.

因此，研究Allee效应和似Allee效应对不同尺度上捕食者。猎物相互关系的影响就具有重要的意义。

Compared to the landscape ecological fragmentation who\'s main feature is the habitat quality degradation,landscape configuration fragmentation had more effects on population dynamics of the Amur tiger\'s main prey.Hence protective measure should be emphasized on recovering landscape spatial pattern,ensuring enough suitability habitat area and minishing complexity of patch figure.

相较于以生境质量下降为主要特征的景观功能破碎，景观形态破碎对东北虎主要猎物种群动态具有更大的影响，因此应将保护的重点放在恢复景观空间格局上，保证足够的适宜生境面积，降低斑块形状的复杂性。

The capitalists held on to their markets as an eagle holds on to its prey and throwing off their apostolic mask, defended their annexations with fire and sword.

资本家像老鹰抓活食一样牢牢地把住他的市场，并且扯下了假仁假义的面具，用武力来保护他们所得的市

The capitalists held on to their markets as an eagle holds on to its prey and throwing off their apostolic mask, defended their annexations with fire and sword .

资本家像老鹰抓活食一样牢牢地把住他的市场，并且扯下了假仁假义的面具，用武力来保护他们所得的市场。

The sun shone brightly on Sherwood's glades when Abbot Hugo sent his convoy, as he had planned, toward Nottingham, confident that Robin Hood and his men would come out after it, and thus render themselves easy prey for Guy of Gisborne and the party who followed on after the pack mules.

当雨果修道院院长如他所计划的护送东西到诺丁汉时，修武德的空地上阳光闪烁，相信罗宾汉和他的人将出来跟随，如此就很容易使他们成为自己的猎物，因为盖吉斯朋和他的党徒跟随着驮物的骡子后。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。