法律面前人人平等
all people are equal before the law
equality before the law
化工工人
Chemical plant workers
trace element
Employees of chemical factory
Chemical industry workers
潜流水平人工湿地
subsurface horizontal flow wetland
人工工作量模型
artificial work-load model
人工平衡
Anthropogenic equilibrium
artificial balance
人工人口系统
artificial population systems