"Their main field, the world's largest producing field, has been in production since 1951," Hamilton told me. "Sooner or later, that's going into decline."
“他们的主要油田，也是世界上最大的油田，自1951年以来一直在开采，”Hamilton告诉我，“迟早有一天，石油产量是要减少的。”
A minor is an alternative field of study that is a complement, or perhaps entirely different from your main field of study.
辅修课是研究领域的一种选择，是一种补充，或许会和你学习的主要领域完全不同。
Systematic and Evolutional Botany, whose main field is the plant comparative anatomy, is one of the important subjects among the modern plant science.
系统与进化植物学是当今植物科学中的主流学科之一，植物比较解剖学是该学科的重要组成部分。
This paper presents the first main field of digital image output: digital projection technology.
本文阐述了数字影像输出的第一大类领域：数字投影技术。
Engineering construction bidding and goods stock bidding are two main field in our bidding business.
工程建设招标和货物采购招标已成为我国招标业的两大主要领域。
The situation of utility of heavy calcium carbonate was analysed from its main field of consumption.
从碳酸钙的主要消费领域入手，分析其利用现状。
The main field which he worked in is : contract, marriage and family, compensation for personal injury.
主要执业领域为：合同、婚姻家庭、人身损害赔偿。
The software testing method oriented to faults will be the main field of software testing technique in the future.
面向故障的软件测试方法是今后软件测试技术研究的主要内容。
The old oil and gas regions are the main field increasing reserve and production during the past decade and the next decades in the United States.
老油气区是过去和将来几十年间美国油气增储上产的主要领域。
In order to get the crustal anomaly field, the main field, magnetospheric, ionospheric and induction fields from the Magsat data must be subtracted.
为了提取地壳异常场，必须从观测资料中消除主磁场、磁层场，感应场和电离层场。
The crust magnetic field, or lithospheric magnetic field, can be deduced by subtracting the main field, variation field and its induced counterpart from the total field.
从全球磁场减去地核主磁场和变化磁场及其感应磁场后，就得到岩石圈磁场，又称地壳磁场，或地磁异常。
The space environment is the main field of the space-aeronautics incorporation information battle, and is the information base and resource guarantee of utilizing space and controlling space.
空间环境是开展空天一体化信息作战的主要场所，也是利用空间、控制空间的信息基础和资源保障。
The space environment is the main field of the space-aeronautics incorporation information battle, and is the information base and resource guarantee of utilizing space and controlling space.
空间环境是开展空天一体化信息作战的主要场所，也是利用空间、控制空间的信息基础和资源保障。
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