不可或缺

At present time, these mappings have become important tools in studyingoperator algebras.

目前这些映射已经成为研究算子代数不可或缺的重要工具。

The "Amicus curiae" system has become an indispensable element for the adversarial system of litigation culture in Britain and the U.S.

&法庭之友&制度有助于法庭作出符合社会公正价值愿望的裁判，提升司法民主化，已成为英美对抗制诉讼文化不可或缺的重要组成部分。

Measuring and computing air data is an indispensable factor in avionic systems, and the related air-data computation system has become an important part of the flight instruments.

大气飞行数据的量测以及计算是一项航空工程不可或缺的要素，而其对应的数据仪表系统也是飞行状态仪表的重要部分之一。

For modern people, beverages have already become an indispensable part of life.

对於现代人来说，饮料早就是生活中不可或缺的一部份。

The balloon artists are indispensable in the buskers. There're at least four or five artists of this kind every year.

吹气球向来是街头艺术中不可或缺的项目，每次在街头艺术节中，至少也会看到四五个专精此道的艺术家。

In the nature of single blessedness he would one day take unto himself a wife when Miss Right came on the scene but in the interim ladies' society was a conditio sine qua non though he had the gravest possible doubts, not that he wanted in the smallest to pump Stephen about Miss Ferguson (who was very possibly the particular lodestar who brought him down to Irishtown so early in the morning), as to whether he would find much satisfaction basking in the boy and girl courtship idea and the company of smirking misses without a penny to their names bi or triweekly with the orthodox preliminary canter of complimentplaying and walking out leading up to fond lovers' ways and flowers and chocs.

这位幸运的单身汉有朝一日遇上相般配的小姐，就会娶她作妻子。到那时为止，与女人交往倒也是个不可或缺的条件。他丝毫不想为弗格森小姐（促使他凌晨来到爱尔兰区的，极可能就是这位特定的&北极星&哩）的事盘问斯蒂芬什么。尽管他十分怀疑斯蒂芬能够从诸如此类的事中得到由衷的满足：沉湎于少男少女式的谈情说爱啦，同只会嘻嘻嘻地傻笑、身上一文不名的小姐每周幽会上两三次啦，照老一套的程序相互恭维，外出散步，又是鲜花又是巧克力地走上亲密的情侣之路。

Most are coenzymes, and all appear essential to the metabolic processes of all animal life.

大部分的维生素B复合体是辅，而在所有动物的代谢过程中可能是不可或缺的。

The previously research enunciation that, in activities of vision search and detect activity, the effective direction of attention contribute to the cognitive activity's carry on, this is called the cueing effect in attention study.

注意是日常生活中不可或缺的一种认知加工活动，已有的研究表明，在视觉搜索和觉察活动中，良好的注意指向有助于认知活动的进行，这就是在注意研究中所说的注意的提示效应。

For print and production finishing ideas on everything from boxes, cartons, bottles, tubes, cans, packs, jars, multi- packs, and gift packs, Print and Production Finishes for Packaging is an indispensable ideas sourcebook and practical guide to finishes, surface graphics, detailing, and materials that help make packaging stand out from the crowd—including foil blocking, pigment blocking, thermography, varnishing, laminating, embossing, debossing, die-cutting and laser-cutting; specialist inks, including metallics and fluorescents; different paper stocks and other materials; lenticular printing, and so on.

包装印刷和制造的最后工序设计》是一本不可或缺的创意工具书和实用指南，告诉设计师如何处理印后，平面设计，细节设计和材料等问题，正是这些技术使包装脱颖而出——包括箔片、颜料，温度记录、上漆，压层，压纹，压痕，冲切和激光切割；还有特制墨水，包括金属性的和荧光的；不同的造纸原料和其他材料；透镜印刷等等。

In the mean time, elastomers with better heat-resistance and higher hardness are indispensable in improving the quality of the printing plate.

而在烫印版的改进技术中，耐高温高硬度弹性体是一种不可或缺的关键材料。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。