难获得的

Yeast is one of the main ergosterol producers. Therefore, the ergosterol content should be increased as high as possible for application in ergosterol production.

野生型的酵母菌株在细胞生长和甾醇合成之间常存在一定的矛盾，因此通过自然筛选很难获得生长良好和麦角甾醇含量高的菌株。

This sadly is the problem for the future, I am often asked about the technigues of captive breeding of falcons and hawks by Chinese falconers who can see that falconry using wild hawks will be hard to defend.

这样的状况昭示了并不乐观的将来。我经常被中国鹰猎者问到人工繁殖鹰隼的相关技术。这些中国鹰猎者想必也意识到，鹰猎活动如果运用野生鹰隼，最终将会很难获得认可。

At present, most of the management mode is the family management style, such a management model difficult to obtain outside the Fund's favor.

目前，大多数的管理模式，是家庭的管理方式，这种管理模式很难获得境外基金的青睐。

BACKGROUND: The cytoplasm plays a decisive role in the process of cell differentiation. However, it is difficult to obtain a large number of live cytoplasm in present study.

背景：细胞质在细胞分化过程中起着决定作用，但目前的实验很难获得大量的、有活性的胞质体。

Any new startup would require proper funding and without that it is difficult to be successful in their business venture.

任何新的启动将需要适当的资金和无，很难获得成功，他们的生意。

They arecheap, interchangeable, have standard connectors and can measure awide range of temperatures.

便宜，可互换，标准连接器以及较大的温度测量范围主要的限制是精度，很难获得小于1°C 的系统误差。

The number of these various collections, in addition to the works of the great Fathers, made it difficult to obtain a complete set of patristic writings.

数量这些不同的集合，除了作品的伟大父亲，因此很难获得一套完整的教父著作。

It may be difficult to understand the cash advance process, but it is not the process of getting the money that is the difficult part to understand.

可能很难理解预借现金的过程，但它并不是的过程中获得的金钱，这是困难的部分理解。

The emphasis on terrorism is part of a calculated appeal to some female voters, who tend to be among the late deciders in a campaign, and among whom Mr. Kerry has had difficulty building the kind of support Democrats typically have.

强调恐怖主义只是有计划地吸引一些女性选民的一部分，她们是选举中通常较晚做决定的，而在她们中间克里先生很难建立那种民主党获得的代表性支持。

Delta gene transfer may provide a means for solving the problems of ex vivo expansion of DPSCs. The establishment of transduced DPSCs may be used as seeding cells for dental pulp regeneration or tooth engineering, and for further studies, such as the mechanisms regulating stem cells commitment and differentiation, and stem cells related gene therapy.

Delta1基因转导可能有助于解决牙髓干细胞体外培养易老化和难大规模扩增等问题；获得的基因改造牙髓干细胞一方面有望作为组织工程的种子细胞，另一方面也为进一步研究牙髓干细胞向不同方向分化机制、相关基因治疗等打下了良好的基础。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。