Each chemical is carefully reviewed by the U.S. Food and Drug Administration and approved at concentrations of about 20 to 50 times the normal consumption level.
每种化学物质都经过美国食品和药物管理局的仔细审查,其浓度约为正常消费水平的 20 至 50 倍。
单词 | normal consumption |
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原声例句
中级英语短文 Each chemical is carefully reviewed by the U.S. Food and Drug Administration and approved at concentrations of about 20 to 50 times the normal consumption level. 每种化学物质都经过美国食品和药物管理局的仔细审查,其浓度约为正常消费水平的 20 至 50 倍。 经济学人 Finance and economics Supply cuts mean that by the end of 2022 the continent will have missed out on 84bn cubic metres (bcm) of Russian gas, equivalent to 17% of its normal annual consumption. 供应减少意味着到 2022 年底,该大陆将错失 840 亿立方米 (bcm) 的俄罗斯天然气,相当于其正常年消费量的 17%。 |
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