有盖培养皿里的细胞培养。
油浮到罐头的顶部，封住空气，留下水在底部聚集，就像是为肉毒菌提供一个有盖培养皿。
The oil floats on top of the jar and seals out air, leaving water to collect at the bottom, where it ACTS like a Petri dish for botulism.
油浮到罐头的顶部，封住空气，留下水在底部聚集，就像是为肉毒菌提供一个有盖培养皿。
The oil floats on top of the jar and seals out air, leaving water to collect at the bottom, where it ACTS like a Petri dish for botulism.
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