活动英语名词：move about。
双语例句：
结论MKJ除菌消毒空气洁净器高效、省时、简便、安全性高，尤其能在有人活动场合连续灭菌消毒。
Conclusion?MKJ?air?disinfecting?machine?is?high?effective,?time?saving,?convenient?and?safe,?which?can?be?used?continuously?in?areas?where?people?move?about。
两组比较：P<00001，差异有极显著意义。结论MKJ除菌消毒空气洁净器高效、省时、简便、安全性高，尤其能在有人活动场合连续灭菌消毒。
There?are?significant?difference?between?two?method,?P?<?0?0001.Conclusion?MKJ?air?disinfecting?machine?is?high?effective,?time?saving,?convenient?and?safe,?which?can?be?used?continuously?in?areas?where?people?move?about。
活动部件的摩擦使发动机过热。
Friction?between?moving?parts?had?caused?the?engine?to?overheat。
他的发言给整个活动增添了一丝幽默的气氛。
His?comments?injected?a?note?of?humour?into?the?proceedings。
