短語詞組短語plant defence mechanism 植物防衛(wèi)機(jī)制psychological defence mechanism 心理防御機(jī)制defence and protection mechanism 防護(hù)機(jī)理immune defence mechanism 免疫防御機(jī)制multilayer defence mechanism 多層防御機(jī)制mental defence mechanism 心理防御機(jī)制 返回 defence mechanism