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.
思路：① 算每辆车到达时间 = (target - position) / speed；② 按位置降序排序；③ 单调递增栈：仅当当前时间 栈顶时间时压栈（新车队），否则合并。栈长即为车队数。可优化为用变量代替栈。
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阿斌提到，女朋友家住在内蒙古某县城，距离自己家的距离差不多在800公里左右。之所以选择自驾回家，阿斌直言，“一方面是觉得距离尚可，在自己可接受的里程之内，另一方面则是第一次去女朋友家过年，带的东西比较多，开车可用空间大一些，更从容一些。”
The stunning image is the largest ever obtained by the specialist telescope in Chile called the Atacama Large Millimeter/submillimeter Array (Alma) radio telescope, according to the group behind the project.。搜狗输入法2026对此有专业解读