return this.#data.get(key)?.value;
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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.
我也不知道当时是怎么过来的。我记得大四的时候，我们班只有我能出去拍戏，别人不行，因为我要去挣钱，班主任特批我去的。有人来我们班找女生拍广告，她也会说，必须得带着郭晓东。在我的成长过程中，虽然艰难，但每到一个关键节点，总会有贵人出现。