adj. unartificial
问题是，从字面上看，天然香料可以是非人为的东西。
The problem is, natural flavor can, literally, be anything that isn't man made.
它说‘盔甲卫队’公司雇佣的450名保安人员中大约300人为廓尔喀人，其余由澳大利亚人、南非人和美国人混合组成。
It said about 300 of the 450 ArmorGroup guards are Gurkhas and the rest are a mix of Australians, South Africans and Americans.
自然环境中非人为产生的气溶胶是最常见的云凝结核。
Natural aerosols are the most common condensation nuclei in pristine environments.
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