Question

急急急！！！高手帮忙翻一下，要求句子通顺，表达正确，不要和翻译工具上翻译的一样！

In water,the hydrophobic group may be,for example,a hydrocarbon,fluorocarbon,short polymeric chain,or siloxane chain of sufficient size to produce the desired solubility characteristics when bound to a suitable hydrophilic group . In aqueous systems,the hydrophilic group( the‘‘ head ’’ ) will be ionic or highly polar,so that it can act as a solubilizing functionality. In a nonpolar solvent such as hexane the same groups will,in theory,function in the opposite sense . As the temperature, pressure, or solvent environment of a surfactant (e.g., cosolvent addition,pH changes, or the addition of electrolytes in aqueous systems) varies,significant alterations in the solution and interfacial properties of the surfactant may occur. As a result, modifications in the chemical structure of the surfactant may be needed to maintain a desired degree of surface activity. It cannot be overemphasized that a given surfactant effect will be intimately tied to the specific solvent environment in use. Any change in that environment may significantly alter the effectiveness of a surfactant and require major structural changes to retain the desired surface effects. Therefore, for surface activity in a given system, the prospective surfactant molecule must possess a chemical structure that is amphiphilic in the desired solvent under the proposed conditions of use. But how can one determine the best chemical structure for use in a given system?

Answer 1

分数太少了，你给50分我就给你翻

Answer 2

在水中，疏水基团例如，碳氢化合物，碳氟化合物，短链聚合物，或具有相当规模的连锁硅氧烷，当绑定到一个合适的亲水基团时，会产生预期的溶解特性，。在水系统中，亲水组（即''头''）将有离子或高极性，因此它可以作为溶解的功能。同理，在非极性溶剂中，如正己烷，将起反作用。随着温度，压力，溶剂或表面活性剂的环境（例如，助溶剂，pH值的变化，或在水性体系中电解质）其特性也将随之改变，在溶液中和表面活性剂界面性质可能发生重大改变。因此，在表面活性剂的化学结构的修改可能需要维持一个表面活性所需的程度。它不能过分强调一个给定的表面活性剂效果会密切相关的具体使用溶剂的环境。在这种环境中的任何变化可能大大改变了表面活性剂的有效性，需要重大的结构性转变，以保持所需的表面效果。因此，对于表面特定系统的活动，准表面活性剂分子必须具备的化学结构，在所需的溶剂双亲的建议下使用条件。但如何才能确定在给定的系统使用的最佳化学结构？