人群活动, 学校生活, 语音, chinese_environment, crowd, human, 声音, people, school_life, crowd_activity, 热闹, high_school, 说话, voice, 人群, 嘈杂, opening, talking, lively, 日常生活, 人声, cat, 开门, daily_life, speech, hallway_before_class, 课前大厅, 人类, door
TAG: transportation, 行人, noise, 都市生活, busy, 噪音, 城市环境, 交通, street, vehicle, 车辆, urban_environment, pedestrian, 繁忙, urban_life, 街道 → 街道_车辆_引擎声
TAG: 人类, 发言, communication, talking, dishes, 说话, domestic, voice, 喧哗, 人声, 交流, speech, household, 语音, 餐具, human → 人类_发言_声音