hyogwaga eopeumyeon
to be ineffective
être inefficace ; ne pas fonctionner ; ne pas être efficace
효과가 없으면 다른 방법을 찾아야 합니다.
hyogwaga eopseumyeon dareun bangbeob-eul chajaya hamnida.
If there is no effect, you need to find another method.
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