Page 650 - 45whpsjournal
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turn off the lights, unplug the plugs… and so on. You
can save energy all the time. In fact, everyone uses
their cellphones every day. So, the mobile phone
industry invented the “power bank” to help people
when their phones are out of battery, they can use the
power bank to charge their phones. It is small and
compact, easy to carry, and can be used anytime,
anywhere! This is a major breakthrough in technology. I
hope people can save energy, protect our environment
from destruction, and promote the sustainable
development of natural resources.
