经常锻炼身体可以促进身心健康（boost）
Regular physical exercise can?boost both physical and mental health.
事实上，很多参与者并不知道这项活动的详细规则（uninformed）
In fact, many participants don't know the uninformed rules of the event.
根据指示，志愿者被分成了两支救援队
According to the instructions, the volunteers were assigned to two rescue teams
专家认为需要五年的时间才能显著改善空气质量（significantly）
Experts believe that it will take five years to improve air quality significantly.