1-Crime is plunging in the rich world.犯罪率在发达国家下降;
2-have absolutely no respect for...对...无丝毫尊重可言;
3-communities patrolled by security guards有保安巡逻的小区;
4-furiously debate激烈争论;
5-interrupt the downward trend没有打断下降态势;
6-at a 30-year low达30年最低
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