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refractory
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electromotor,
electro-motor,
electromyelography,
electromyogram,
electromyograph,
electromyography,
electron,
electron accelerator,
electron beam,
electron gun,
相似单词
难于启齿,
难运转的,
难战胜地,
难镇静的,
难制服的,
难治疗的,
难住,
难转向地,
难捉摸的,
喃,