giryu tamcheukgigu
trial balloon
ballon d'essai
정부는 새로운 정책을 발표하기 전에 기류 탐측기구를 사용했다.
jeongbuneun saeroun jeongchaeg-eul balpyohagi jeon-e giryu tamcheugigureul sayonghaetda.
The government used a trial balloon before announcing the new policy.
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