在困难中

It is very difficult to isolate chymopapain from the latex of Carica papaya because chymopapain is very similar to the other three cysteine proteinases in the latex at the structure and properties.

由于番木瓜乳汁中含有的四种巯基蛋白酶在结构、性质等方面十分相似，因而分离木瓜凝乳蛋白酶比较困难。

The former River central defender (23 years of age) should today fly to Rome for having last meetings, perhaps the decisive one with Lotito. Lazio president had tried to purchase him just before the deadline but some difficulties had emerged, even because Paco Casal maintained that he is owned by a team from Uruguay.

这位前河床中后卫（23岁）可能今天飞到罗马进行最后一次见面，可能是与lotito的决定性的一次。lazio主席曾试图在转会期结束前买来他，但是出现了一些困难，特别是Paco Casal声称他是属于乌拉圭一个团体的。

Result The gall bladder cancer always a ccompanies with cholelith lt is difficult to diagnose it in the early stage, wlich is often feund during the process of cholecystectomy through peritomeoscope.

结果 胆囊癌常合并有胆囊结石，早期诊断较困难，往往在腹腔镜胆囊切除术中发现。

The remarkable analgesic effects of adrenal medullary chromaffin cell transplantation for pain have been shown in many studies, but it has notreached the status of a standard clinical treatment.

尽管大量研究显示出肾上腺髓质嗜铬细胞移植在疼痛治疗中的显著效果，但将其作为基本治疗方法用于临床还存在许多困难，其中有限的细胞来源是AMCC 移植广泛应用的最大障碍。

But in many reinforcement projects, some unfavourable geological are encountered frequently, such as colluvial soil, residual soil, slope wash, etc., which result in collapse of borehole and clip of bore rod during drilling of borehole that will bring considerable difficulties to construction and many incipient faults for construction quality.

但是，锚固工程常遇到各类不良地层（例如塌积、残积、坡积和崩积层等碎石土地层），在锚固施工的钻孔中由于严重的塌孔、卡钻，给施工带来很大困难，同时也给锚固工程质量带来隐患。

The Ant Colony Optimization is a kind of bionic optimization based on swarm intelligence,which provides new methods for complex combinatory optimization.

蚁群算法是一种用于求解优化问题的新型模拟进化算法，该算法在许多相当困难的优化问题的求解中体现了极强的寻优能力和较好的性质。

From a design description of StartPalette in the research project TaskGallery : Instead of confusable and hard to learn icons, open documents and running applications are shown as snapshots, small versions of their actual appearance.

在研究计画 TaskGallery 中，取自StartPalette的设计描述：替代容易混淆和学习小图示的困难，以萤幕撷图和他们实际上外观的较小版本来显示作为开启文件和执行应用程式。

This paper proposes the identity-based proxy signature scheme using the conjugacy search problem in the braid groups which are believed to be hard problem,and its security is also analyzed.

介绍了辫群的基本概念、两个重要性质和辫群中的困难问题，在此基础上，利用辫群上的共轭查找问题构造了一个基于身份的代理签名，并对它的安全性进行了分析。

But during the process of agricultural industrialization, there are many problems exist in the key enterprises, such as scale enlargement, market deploitation, technology innovation and asset conformity etc.

但在农业产业化经营中，龙头企业还存在规模扩张、市场开拓、技术创新、资产整合等诸多困难。

The results show that in the protonation process, because of the effect of meso-(p-methylpyridyl), the changes of the structure and bond charge population are obvious; the frontier molecular orbitals have opposite change trend with the case of meso-yridyl, the rapid exchanges of inner hydrogens of the protonated diacid with solvent protons become more difficult.

结果表明，由于m-甲基吡啶的影响，在质子化过程中结构和键电荷布居有明显变化；前沿分子轨道具有与四吡啶基情形相反的变化趋势，质子化二酸与溶液质子的快速交换作用也变得更困难了。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。