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retention sample
(of a manufacturer, esp. of food or drugs) to retain a sample of a batch of a product (abbr. for 保留樣品|保留样品[bǎo liú yàng pǐn])
江苏热线英汉汉英双解词典包含207361条英汉翻译词条,涵盖了常用英语单词及词组短语的翻译及用法,是英语学习的必备工具。