3454 雑音: noise: The background noise is so loud that I can't hear your voice. 4410 混じる: be blended, get mixed (distinguishable): The voice on the phone was mixed with background noise. 4575 経歴: personal background, experience: Please send me your background information by e-mail. 5236 重視: importance, value: That company values one's educational background. 7802 由緒: history; lineage: Her family has a distinguished background. 8081 身元: one's birth; one's identity: They are investigating his background.