方法二：使用 KMP 的 expect/actual 机制统一处理平台差异
The change to agar was a marked improvement. The jelly is so effective that it is still an invariable ingredient in what is known today as the “Koch’s plating technique” or the “culture plating method.” As Koch himself noted in 1909: “These new methods proved so helpful…that one could regard them as the keys for the further investigation of microorganisms…Discoveries fell into our laps like ripe fruits.”
。关于这个话题，91视频提供了深入分析
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is vague enough that I cannot give a definitive reason for its limited success,