掩护: to screen, to shield, to cover, protection, cover...
嘱咐: to tell, to exhort, injunction...
钟: clock, o'clock, time as measured in hours and minutes, bell...
小贩: peddler, hawker...
物证: material evidence...
外星人: space alien, extraterrestrial...
管理费: administrative fee, management cost...
防止: to prevent, to guard against, to take precautions...
欢呼: to cheer for, to acclaim...
有益: useful, beneficial, profitable...
