environment前面+不+the

不加！下面的例句可以证明

estuarine environment
河口环境
eutrophic environment
富养(分)环境
freshwater environment
淡水环境
genotypical environment
遗传型环境
geohydrologic environment
水文地质环境
geologic environment
地质环境
ground environment
地面设施
human environment
人类环境
inert environments
惰性环境
infraneritic environment
浅海外环境
inhabited environment
居住[栖居]环境
internal environment
内环境
lacustrine environment
湖泊环境
littoral environment
滨海环境
mesophytic environment
中生植物环境
nearshore marine environment
近岸海洋环境
neritic environment
浅海环境
noise environment
噪声环境
normal atmospheric environment
标准大气环境
occupational environment
职业环境
orbital environment
轨道环境
oxygen-deficient environment
缺氧环境
paralic environment
近海环境
pelagic environment
远洋环境
primary environment
原生环境; 第一环境
reducing enviro