動詞 plug:

1. fill or close tightly with or as if with a plug
   同義詞：plug, stop up, secure
2. persist in working hard
   同義詞：plug, plug away
3. deliver a quick blow to
   同義詞：punch, plug
4. make a plug for; praise the qualities or in order to sell or promote
   同義詞：plug

1. The outlets are conveniently placed for plugging in.
   電源插座裝在便于插插頭的地方。
2. He has been plugging away at that article, for hours.
   他已堅持了好幾個小時寫那篇文章。
3. They've been plugging his new show on the radio.
   他們一直在電臺上宣傳他的新節(jié)目。
4. She's been plugging away at her French lessons for months.
   她已刻苦攻讀法語數(shù)月。