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trial run
trial run /ˈtraɪəl rʌn/
noun
-
Trying something to find out about it
(
trial run
, tryout
, trial
, test
)
trying something to find out about it
A sample for ten days free trial
a sample for ten days free trial
A trial of progesterone failed to relieve the pain
a trial of progesterone failed to relieve the pain