// 易错点1：未初始化数组长度 → 赋值res[i]时会报错；无需fill(0)，因为每个位置都会显式赋值
Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
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第九条 国家支持和平利用原子能，鼓励和平利用原子能的国际交流与合作，促进共享和平利用原子能事业成果。