法律面前人人平等
equality before the law
all people are equal before the law
化工工人
Chemical industry workers
Chemical plant workers
Employees of chemical factory
trace element
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
artificial balance
Anthropogenic equilibrium
人工人口系统
artificial population systems