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Level 4

Level 4


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catalytic converter
convertidor catalítico
harmless
inocuo
mileage
kilometraje
expansion
expansión
purchasing power
poder adquisitivo
to supplement
complementar
pollutants
contaminantes
to utilise
aprovechar
to pump
bombear/inyectar
prolific growth
crecimiento prolífico
proportionately
proporcionalmente
degradation
deterioro
widespread
extendido