n.填塞器；用功的學(xué)生；宣傳員

John is the spark plug on his rowing team. 約翰是劃船隊(duì)的中堅(jiān)分子。

You can plug into the national computer network. 你可以接通全國(guó)計(jì)算機(jī)網(wǎng)絡(luò)。

The TV compere gave her new record a plug. 電視節(jié)目主持人極力推薦她的新唱片。

The wall plug is broken, isn't it? 墻上的插座壞了，不是嗎？

It's hard to get at the spark plug without a proper wrench. 沒有一把合適的扳鉗，要抓住那個(gè)火花塞是困難的。

Pull (out) the plug and let the water drain away. 拔掉塞子，把水放掉。