water clock sentence - water clock sentence in Hindi (21-30)

	21.	These early water clocks were calibrated with a sundial.
	22.	The Greeks considerably advanced the water clock by tackling the problem of the diminishing flow.
	23.	Midnight was not even considered because it could not be accurately determined using water clocks.
	24.	Some authors, however, claim that water clocks appeared in China as early as 4000 BCE.
	25.	I am trying to build a water clock.
	26.	Water clock and sun dials are mentioned in many ancient Hindu texts such as the Arthashastra.
	27.	A water clock, also known as a clepsydra, uses a flow of water to measure time.
	28.	They failed in developing an operational water clock.
	29.	Sundials and water clocks served to count hours.
	30.	It must have been a water clock because the ancients did not have mechanical clocks, right?

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