手

She had the whole suit unstitched and wanted to re-sew it behind my back, but she just couldn't make it, her fingers being all thumbs with age .

她把衣裤都拆了，想背着我重缝起来，可是手不听使唤，缝不成了，妈妈看着自己那双哆哆嗦嗦的枯手，叹了一口气。

In this dissertation, the efforts were focused on design and synthesis of chiral tmsymmetrical urea, cholic acid and heteroaromatic molecular tweezers and their molecular recognition as well as enantioselective recognition. A series of useful and creative results have been obtained.Three new types of chiral molecular tweezers containing unsymmetrically disubstituted urea unit, four new types of chiral molecular tweezers based on steroid cholic acid and one type of heteroaromatic molecular tweezers involving multiple hydrogen-bonding site have been designed and synthesized.

本文致力于新型手性不对称脲、胆甾和芳杂环类分子钳受体的设计合成及其对阴离子、中性分子和手性分子的识别及对映选择性识别性能研究，取得了一系列具有重要学术意义与应用前景的创新性结果。

The results showed that the addition leading to -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 7 could proceed with good diastereoselectivity and excellent yield (95%).(3) The selective N-deprotection of -2-phenyl-2-(2-vinylpiperidin-1-yl) ethanol 2 without affecting the vinyl group in the substrate were untaken.(4) The Zip reaction for the transformation of -1-(3-aminopropyl)-3-methylazecan-2-one 8 to -7-Methyl-1, Sdiaza-cyclotetradecan-6-one 9 were undertaken. The results showed that, under controlled conditions, acceptable yields (43%) could be achieved and racemization can be minimized during the ring expansion reaction.

该合成路线与文献方法相比，反应条件较温和，也缩短了反应时间；(2)哌啶衍生物2与乙烯基格氏试剂进行加成反应的条件和立体选择性，取得了较好的结果（差向异构体比为80：20，产率95％左右）；(3)不饱和哌啶衍生物7在不影响碳碳双键的情况下去除苯基甘氨醇手性辅助基的条件；(4)具有羰基α位手性的氨基酰胺8在不同条件下经Zip重排反应转变为9的反应，控制反应条件，可使反应中消旋化减小到最小的程度。

With one hand he seized the static line to shore; with the other he untangled the boat line from his body.

他一只手抓住系在岸边的静力绳；另一只手从他身上解开救生艇的绳子。

With an unwounded hand even poison may be touched; with a wounded hand hardly even what is not poison.

展开的手甚至毒害与之接触的事物；受伤的手很难甚至它没有毒。

Long nails is easily to cover dirty, babies have the habit of sucking their figures and fetching food directly by hand, then dirty in the slot will be in your mouth which usually cause disease of digestive tract and verminosis and impacts children's health.

是长指甲容易藏污纳垢，婴幼儿又有吸吮和用手直接拿东西吃的习惯，手指甲缝里的脏东西吸进嘴里后，往往引起消化道疾病和寄生虫病，影响他们的身体健康。

About the name "spring", there must have been such a story:Before Book of Songs and Book of History, even before word formation, a lamb suddenly felt juicy when cropping grasses; a kid suddenly felt kite's soaring when flying it; a leg, pained from wind stroking all days long, suddenly felt stretched; thousands of snow-white hands suddenly felt spirituality of water when washing by brook, pond and river... All of them started running to tell each other surprisingly, when they decided to name the season by putting their mouths into a shape as if they were whistling and with a pleasant whispery voice, as "Spring".

关于春天的名字，必然曾经有这样的一段故事：在《诗经》之前，在《尚书》之前，在仓颉造字之前，一只小羊在啮草时猛然感到的多汁，一个小孩在放风筝时猛然感到的飞腾，一只患风痛的腿在猛然间感到的舒活，千千万万双素手，在溪畔，在塘畔，在江畔浣纱的手所猛然感到的水的血脉……当他们惊讶地奔走互告的时候，他们决定将嘴噘成吹口哨的形状，用一种愉快的耳语的声量来为这季节命名：&春&。

4He am storing on a raised plattom in a corner of the room.he am a wizened old man dawn wrinkled expression or a sad expression.over his willer am thrhave a rough brhave coat,whichle torn or full of holes,his thick boots were old or patched ;or dawn first hor he leant on a rough stick,when dawn the other he held away his battered hat to mfirsty.

他站在屋子角落唯一支高的台子上，他是唯一老人，满脸的皱纹和悲伤的表情。他的肩膀上搭着一件粗糙，破烂的棕色外套，他的厚靴子上也打了补丁，他用唯一手倚着一根拐杖，另一只手拿他的破帽子讨钱。

Homever i want,worden having you hand ,carry you to every place you want,but you even gei me a chance.outside is raining,i cant contrl my hand write down your name on the window.the reason breathe is you,how do i breathe without you?

homever我想，沃登有你的手，把你带到每一个地方你想要的，但你甚至基我chance.outside下雨了，我都无法形容皇岗写下我的手您对window.the呼吸的原因是你的名字，我怎么没有你呼吸？

May our friendship live long as well as our workship.

我们友谊常在，我们一起手牵手。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。