31 开药方 to prescribe the medicine

32 坚守原则 to stick to the principle

33 注意卫生 to emphasize the importance of hygiene

34 乱丢垃圾 to litter; to scatter garbage

35 美化环境 to beautify the environment

36 种植树木 to grow trees

37 防止污染 to prevent the pollution

38 提升生活质量 to promote the qualities of life

39 造成损害 to do damage to

40 对．．．有益 to benefit; to be beneficial to

41 对．．．有害 to be harmful to; to do harm to

42 任意停车 to park the car at random

43 制造噪音 to make noises

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44 占用人行道 to occupy the sidewalk

45 妨碍交通 to hinder the traffic

46 排放污烟、废气 to belch smoke， exhaust， fume

47 造成不便 to cause inconvenience

48 造成混乱 to bring about the disorder

49 闯红灯 to run through the red light

50 利用天桥 to make use of the overpass

51 to consult the dictionary

52 屏息 to hold one"s breath

53 流泪 to shed tears

54 符合需要 to meet the demand

55 生根 to take root

56 产生结果 to bear fruit

57 打破沉默 to break the ice

58 气馁 to lose heart; to get discouraged

59 振作 to pull oneself together; to take heart

60 采取步骤 to take steps; to take measures