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在推进新时代中国特色社会主义事业的伟大征程中，以习近平同志为核心的党中央进行一系列重大外交理论和实践创新，领导对外工作取得历史性成就、发生历史性变革。为全面反映习近平新时代中国特色社会主义思想在外交领域的原创性贡献和最新发展，去年11月《习近平外交思想学习纲要》更新再版，为广大党员、干部、群众学思践悟习近平外交思想提供了权威辅助读物。我们要深刻领悟这一重大思想坚持与时俱进、引领时代潮流的理论品格，进一步以习近平外交思想武装头脑、指导实践、推动工作。
Agar was first introduced into the laboratory in 1881. Since then, microbiologists have depended on agar to create strong jellies. When microorganisms are streaked or plated onto this jellied surface and incubated, individual cells multiply into distinct colonies that scientists can easily observe, select, and propagate for further experiments. Many of the most important findings in biological research of the last 150 years or so — including the discovery of the CRISPR/Cas9 gene-editing tool — have been enabled by agar.4 Agarose, a derivative of agar, is also essential in molecular biology techniques like gel electrophoresis, where its porous gel matrix separates DNA fragments by size, enabling researchers to analyze and isolate specific genetic sequences.