The tap is a simple machine.
It’s name is a wheel and axle.
It makes it easier to turn on the tap.
SIMPLE MACHINE
The tap is a simple machine.
It’s name is a wheel and axle.
It makes it easier to turn on the tap.
SIMPLE MACHINE
The tap is a simple machine. It’s name is a wheel and axl...
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本文标题：SIMPLE MACHINE
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