以等号分隔的环境变数的配对的阵列。
Array of pairs of environment variables, separated by equal signs.
除了遗传学，一些环境变数似乎影响过敏的风险。
In addition to genetics, several environmental variables appear to impact allergic risk.
NMAKE继承在工作阶段开始之前就存在的环境变数巨集定义。
NMAKE inherits macro definitions for environment variables that exist before the start of the session.
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