英文關鍵字
bill
billing
british
business
charge
close
consumption
cost
crisis
customer
dial
digits
domestic
economy
electric
electricity
energy
expensive
higher
hike
increase
industry
inflation
kilowatt
kwh
living
macro
measure
measuring
meter
money
moving
number
numbers
power
price
prices
reading
red
rise
saving
spend
supplier
supply
technology
utility
voltage