plant defence mechanism植物防卫机制
psychological defence mechanism心理防御机制
defence and protection mechanism防护机理
immune defence mechanism免疫防御机制
multilayer defence mechanism多层防御机制
mental defence mechanism心理防御机制
N-COUNT（可数名词） A defence mechanism is a way of behaving or thinking which is not conscious or deliberate and is an automatic reaction to unpleasant experiences or feelings such as anxiety and fear. [英国英语]