然后他用吸液管将细菌溶液滴到琼脂糖上，在琼脂糖吸干了溶液中的水分后，印章表面就会形成一层固体细菌。
He pipettes solutions of bacteria onto the agarose, which sucks out the water, leaving a solid layer of bacteria.
然后他用吸液管将细菌溶液滴到琼脂糖上，在琼脂糖吸干了溶液中的水分后，印章表面就会形成一层固体细菌。
He pipettes solutions of bacteria onto the agarose, which sucks out the water, leaving a solid layer of bacteria.
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