Aseptic technique is the technique aiming to prevent all kinds of microorganisms from invading the body in the process o答：无菌技术是指在医疗、护理操作中，防止一切微生物侵入人体和防止无菌物品，无菌区域被污染的操作技术。
It is necessary to remove the dirt and pathogenic bacteria, to avoid contaminating germ free or sanitizing articles and 答：除去手上的污垢及污染的致病菌，避免污染无菌物品或清洁物品，避免感染和交叉感染。