How to pronounce trial balloon in Portuguese?

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trial balloon::noun | Spocien Dictionary

trial balloon

noun

/'traɪəl_bə'lun/

a balloon sent up to test air currents

Type	Words
Type of	balloon

trial balloon

noun

/'traɪəl_bə'lun/

a test of public opinion

Type	Words
Type of	test, trial, trial run, tryout