Dr Rubin and his colleagues used what is called a "metagenomic" approach.

鲁宾博士及其同事采用的是被称为“metagenomic”的方法。

The genes concerned are rare in the overall metagenomic analysis, so creatures carrying them may not be abundant.

有关基因在整个宏基因组分析中十分稀少，所以携带该基因的生物数量可能不够多。

The metagenomic library-based technique is an effective strategy for the utilization of un-cultured microorganisms.

宏基因组文库技术是利用未培养微生物基因资源的有效途径。

Methods in metagenomic study, including DNA extraction, library construction and screening were discussed in this paper.

着重论述了宏基因组学的研究方法，包括DNA的提取、文库的构建以及筛选策略的选择。

Progress on the research of metagenomic DNA purification, metagenomic library construction and screening of soil microorganisms are reviewed briefly.

对土壤宏基因组DNA的提取、宏基因组文库的构建和筛选等方面的研究现状和进展进行了简要综述。