been的例句大全

The short-term training class has been run three times.

短训班 办了三期.

《现代汉英综合大词典》

The short-term training class has been run two times.

短训班 办了两期.

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Politics has been reduced to class struggle.

政治变成了阶级斗争。

《柯林斯高阶英汉双解学习词典》

A twinkling of an eye, 4-year career has been a thing of the past classmate.

光阴似箭,一转眼, 4年的同窗生涯已成为过去.

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She's been married five times , so she should know a thing or two about men.

理解就是以一件事物所能被认识的程度去认识(约翰·多恩).

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Obviously he had been predicting the wrong thing for his entire career.

很显然,他对他整个的球员生涯都预测错误.

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His final purchase had been a pair of tennis shoes.

最后他买了一双网球鞋.

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Paper has been found in Chinese tombs dating to the2nd century B.C.

公元前2世纪的中国古墓中就发现了纸。

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Glue is an invention; it's been around since 4000 B.C.

因为胶是一项伟大的发明，它早在公元前4000年左右就已经出现了。

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The concept of "science" has already been used since 7th B.C. As an ancient civilized country.

公元前七世纪已经出现了科学这个概念。

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At the time of this article, none of the aforementioned widgets have been included in version 3 of YUI.

在撰写本文时，上述小部件都没有包含在YUI第三版中。

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Spectral band replication ( SBR) is a novel technology, which significantly improves the compression efficiency of perceptual audio codecs. SBR has been chosen as Band Extension for MPEG-4 Version 3 audio standardization and now enjoys many applications.

频谱恢复（SBR）压缩技术能够极大地提高感知音频编码器的压缩效率，并且已成为MPEG-4version3的音频频谱扩展标准，在许多场合得到了应用。

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Based on the catalytic effects of trace formaldehyde on the reaction between potassium bromate and oxidized azur A, a new catalytic spectrophotometric method has been developed in this paper.

基于在一定温度和硫酸介质中，痕量甲醛对溴酸钾氧化天青A有较强的催化作用，建立了测定痕量甲醛的新的催化光度法。

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It has been replaced with a park to remember Malili, Angelina, Shantae, Rayden, Azariah, Daniel, Rodney and Patrenella.

如今它被一个公园所取代，用来纪念马丽丽、安吉丽娜、桑塔、瑞德、亚撒利雅、丹尼尔、罗德尼和帕特蕾娜。

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Arsenic as the toxic contaminants of the environment especially high levels of arsenic in water has been a worldwide problem.

砷作为毒性较大的环境污染物，特别是饮用水中砷含量超标已成为世界性的问题。

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Arsenic ( As) accumulation and volatilization by microorganism decreasing environmental risk of As in soil has been recognized as an economically efficient remediation method without secondary pollution.

利用微生物对砷（As）的累积与挥发来降低土壤中砷的环境风险已被认为是一种经济、有效且无二次污染的修复措施。

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World Health Organization and International Agency for Research on Cancer has classified arsenic as a carcinogen, arsenic has been regard as the most toxic substance by the USEPA as well.

世界卫生组织以及国际癌症研究机构都将砷列为人类的致癌剂，在USEPA列表中砷也被认为是1号毒素。

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Land, in the process of uncontrolled development and the arrogation of technical rationality, has already been far away from the beautiful picture of The Harmony between Human and the Earth.

土地，在被无节制地开发之中，在技术理性的僭越之中，已经悖离了人地和谐相处的美丽画面。

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It has been a knotty problem to extract Au from arsenical polymetallic sulfides.

从含砷的多金属硫化矿中提金，一向棘手。

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The exact mechanism of the action of arsenical toxicity is not known clearly, but several hypotheses have been proposed.

到目前为止，人类对砷的毒性作用机制还不是很清楚，但存在多种假设：氧化应激，影响细胞增殖，产生基因毒性如影响DNA甲基化、协同致癌、肿瘤促发等。

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