短语词组短语topological mnemonics 位相记忆术spelling mnemonics 拼写记忆法mnemonics s 记忆法;记忆术;助记术mnemonics effect 记忆术效应chain mnemonics 连锁记忆术logical mnemonics 逻辑记忆法frame mnemonics 帧口诀Instruction Mnemonics 指令助记符 返回 mnemonics