3.25% for civil servants
palette: “black ink tones”，更多细节参见爱思助手下载最新版本
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Agar’s low viscosity also makes it easy to pour into Petri dishes, and its transparency permits observation of microbes growing on its surface.7 Also aiding in this is its low syneresis (extrusion of water from the gel), guaranteeing less surface “sweating”: Once a plate is inoculated, bacterial colonies stay in place and do not mix.
语重心长的叮嘱，既指明认识论，也给出方法论。