大约20分钟后，17位村民陆续涌到山沟里，将那头牛五花大绑，横竖穿插了三根木桩，再在牛身上绑两条长绳，绳头各自由几个男人牵引往上拽。为确保每个人都能搭把手，男人们之间挤得密密实实，以至于我都看不见被围在中间的牛。
Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
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Kotlin Multiplatform (KMP) 中使用 Protobuf。关于这个话题，旺商聊官方下载提供了深入分析
The woman who ultimately discovered the superior features of agar as a growth medium and brought it to Koch’s attention was Fanny Angelina Hesse. Her foundational contribution to the nascent field of microbiology is often omitted from textbooks. In other cases, she is unflatteringly referred to as a “German housewife” or as “Frau Hesse,” or dismissed as an unnamed technician.