【化】 precontamination
cubhood; infancy; initial stages; morning; prime; springtime
【医】 initial stage
【经】 initial stage
pollute; contaminate; empoison; stain; taint; vitiate
【计】 fouling
【化】 contaminate; contamination; pollute; pollution
【医】 contaminate; contamination; inquination; pollution
【经】 contamination