Learn Chinese Smarter
yíng yǎng jià zhí jiào gāo de dàn bái dòng
营养价值较高的蛋白胨
nutrient-rich peptone
dàn bái dòng hé niú ròu gāo róng yè
蛋白胨和牛肉膏溶液
peptone and beef extract solution
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