It's no secret that air pollution is a big problem for China.

But how to get water was a big problem.

但如何取水是个大问题。

中考真题- 2016 陕西 阅读B

How is NASA overcoming this very tiny big problem?

美国宇航局是如何克服这个微小但影响巨大的问题的？

高考真题- 2019 全国2卷 阅读D

I realised I had a big problem. I wanted to be all things to all people

我意识到我有个大毛病，我总想不得罪任何人。

柯林斯高阶英汉双解学习词典

Pollution is a big problem to be solved.

污染是一个有待解决的大问题。

外研社英语同义词辨析词典

Determination and Analysis of 3 ′ Untranslated Regions of 4 Strains of SARS Coronavirus Isolated in China

4株SARS冠状病毒中国分离株3′非编码区的序列测定及分析

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Construction of DNA vaccine encoding the small envelope protein of SARS coronavirus and the experimental immunization study in mice

SARS冠状病毒E蛋白DNA疫苗的构建及其实验免疫研究

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SARS coronavirus IgG was positive in 7 mothers and 4 infants.

产妇冠状病毒抗体IgG均阳性，婴儿4例阳性、3例阴性；

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Over-expression and purification of recombinant spike protein fragment of SARS coronavirus

重组SARS-CoV刺突蛋白基因片段的原核表达及纯化

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Genomic Characterization of SARS Coronavirus: A novel Member of Coronavirus

冠状病毒的新成员&SARS-CoV的基因组特性

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Objective: To establish a cell model of SARS coronavirus ( SARS-CoV) in Guangdong.

目的：建立中国广东地区SARS-CoV细胞培养模型。

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Preliminary Study of Inactived SARS Coronavirus Vaccine Experimental Immunity

SARS灭活疫苗的实验免疫初步研究

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Rapid Inactivation of SARS Coronavirus and Other Microorganisms by Metal Catalysts

金属催化剂有效快速裂解SARS冠状病毒和其他微生物

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Molecular phylogenetic analysis of SARS coronavirus and related viruses

SARS冠状病毒及相关病毒的分子系统学分析

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Study on the RNA dependent RNA polymerase of SARS coronavirus.

SARS病毒中依赖于RNA的RNA聚合酶的研究。

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Human Serum IgG Antibody Against SARS Coronavirus Tested by 2 ELISA Essay

两种酶联免疫吸附试验方法检测人血清抗严重急性呼吸道综合征冠状病毒IgG抗体

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Development of IFA method for detecting antibodies of SARS coronavirus

SARS病毒抗体间接免疫荧光检测方法的建立

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Establishment of fluorescent PCR Method for Detection of SARS coronavirus and the clinical trial

荧光聚合酶链反应检测严重急性呼吸综合征冠状病毒的方法建立及临床初步应用

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Three dimensional structure prediction of SARS coronavirus S protein

SARS病毒S蛋白三维结构预测

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Expression of SARS Coronavirus Structural Proteins and Its DNA Vaccine Construction

SARS-CoV主要结构蛋白的基因表达及DNA疫苗构建

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The Research and Development of New Diagnostic Gene Chips for SARS Coronavirus

一种SARS冠状病毒诊断基因芯片的研制

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