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obstruction; hindrance; blocking; disturbance; interference; interruption; sabotage; jamming (a signal)
工事の音が勉強の妨害になります。
The construction noise interferes with my studying.
電波の妨害で電話が繋がりません。
The phone won't connect due to signal interference.
会議中は携帯電話の使用など妨害行為は禁止です。
Please don't disturb the meeting.