Air pollution

to halve

to reduce by half

emissions

sth that is discharged

to recharge

to re-supply with electricity

smog

mixture of fog and smoke

to breach

to break standards

to decrease

to make less in quantity

stringent

strict, rigorous

to curb

to restrain and control

congestion

overcrowding

to spew

to emit, discharge

to pump out

to emit, produce

guideline

general rules

implementation

application

exhausts

fumes, vehicle gases

unbearable

not endurable

to supply

to provide

to take over

to take control

to break down

to stop working

device

piece of technology

to ban

to prohibit

to cope with

to get by, survive