查询词典 lay

It only takes one female head louse to start an infestation as they can lay up to two hundred and ten eggs in their lifetime.

只需要一女头虱开始为患，因为他们可以奠定高达210鸡蛋在其一生中。

When a female head louse moves to new nesting ground they lay eggs about a centimeter away from the scalp.

当一名女性头虱的举动，以新的产卵地，他们产卵约1厘米远离头皮。

The adult, now called a head louse, lives for approximately thirty days, the female head louse can lay between 3 and 6 eggs a day during this time.

成人，现在所谓的头虱，生命大约三十天，女性头虱可以奠定之间的第3和第6鸡蛋每天在这段时间。

Because of the amount of eggs a female can lay in such a short period of time the head louse can infest a persons head in a very short period before easily moving onto its next victim.

由於金额鸡蛋的女性可以奠定在这麼短的时间内，头虱可以infest一人头部在很短的时间内之前，很容易走上它的下一个受害者。

If a head louse falls off the human host they generally die within two days although in this time female head lice may still lay eggs on surfaces that resemble human hair, like teddy bears and woolen rugs which gives possibilities of the cycle being able to start again through a different host being found.

如果头虱属于小康的人力东道国，他们一般模具的两天内，虽然在这个时候女性头虱仍可能产卵于表面，类似于人类的头发，像泰迪熊和羊毛地毯，让可能性周期能够重新开始通过一个不同的主机被发现。

As he lay thinking, he saw a spider over his head, trying to spin a web.

他正躺在地上想着，忽见头上有一只蜘蛛在织网。

A twisted piece of paper lay half burned upon the hearthrug; he picked it up, and unfolded it, in order to get a better pipe-light by folding it the other way of the paper.

炉前地毯上有一张揉皱了的、已经烧掉一半的纸；他把这纸捡了起来，展开，想重新把它卷成另一种形状，以便给烟斗点火。

Linton had slid from his seat on to the hearthstone, and lay writhing in the mere perverseness of an indulged plague of a child, determined to be as grievous and harassing as it can.

我希望你满意了，凯蒂小姐，因为你不是能对他有益的人；他的健康情况也不是由于对你的依恋而搞成这样的。

We fell down in the heather, and lay without moving for a long time.

我们倒在石南丛里，一动不动地躺了很长一段时间。

In general, this paper includes several parts, shown as the following: The first part summarizes the background and outline of stock index future and introduce briefly its local status and CSI 300 stock index future contract. The second part has a retrospect of the main academic papers of both local or overseas, and also a discussion of relevant hedge strategies and models, to lay a solid theoretical foundation for the empirical analysis and test for the operation process of hedge in latter parts. The third part outlines the principle, key factors and real operation process of hedge. Moreover, it makes a empirical analysis on popular hedge models with HK Hang Seng index. In the end, it test the hedge effect of trading on IF0706, CSI 300 stock index future contract, with CCB select-growth securities fund as present underlying. The fourth and also the last part, explores how to define hedge ratio in china mainland market. It includes the stability test ofβfor local securities portfolio, adjustment of historicalβand best data length for estimation of historicalβ, etc. Also, the thesis makes some beneficial experiments on the definition of best data length for estimation of historicalβ, survey of fashion forβand variation for industryβs. Fortunately, it's got some meaningful results.

按照以上研究思路，本论文论述由以下几个部分构成：第一部分，简要概述股指期货产生的背景和基本情况，对国内股指期货进程和沪深300股指期货合约进行简单介绍；第二部分，回顾海内外股指期货避险研究的主要文献，讨论相关避险策略及避险模型，为后面套期保值策略如何有效运用的实证分析和检验提供理论基础和依据；第三部分，对套期保值的原理、关键因素及实际流程进行概述，并采用香港恒生指数对常用的几种避险模型进行实证分析，最后一揽子以建信优选成长股票型基金为现货标的，实际检验以沪深300股指期货模拟交易IF0706产品进行对冲时的套期保值效果；第四部分，探讨国内确定避险比率的过程，包括国内股票组合β值的稳定性检验、历史β值的修正及估计历史β值的最佳数据长度等，通过数据分析，本文在寻找估计β值的最佳数据长度和考察风格、行业β值的差异上做了较为有益的尝试，并得到了有助于现实操作的结果。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失