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Definitions2 characters
zou3 shi2
(of a watch or clock) to keep time/(physics) propagation time/travel time (of a wave)
Usage•••frequent
Pronunciations

As word

1
zou3
(of a watch or clock) to keep time/(physics) propagation time/travel time (of a wave)
2
shi2
(of a watch or clock) to keep time/(physics) propagation time/travel time (of a wave)