n.塞子( plug的名词复数 )；插头；栓塞；推销v.插上插头( plug的第三人称单数 )；以（塞子）塞住； 双语释义：n.(名词)[C]插头,插座 device for making an electrical connection[C]塞子,栓 piece of rubber, metal, etc. used to block a holev.(动词)vt. & vi. 插上插头 push into an electric socket to connect the electricity su