重點講解：
1. different kinds of 不同種類的；各種各樣的；
例句：In a big department store, there are numerous departments selling different kinds of goods.
大百貨公司里有許多部門分售各類商品Y=@ccI9yMV*ix3fs。
2. rely on 依賴；依靠；
例句：We will rely on scientific and technological advancement, encourage the role of market mechanism and economic leverage.
我們將依靠科技進步，發揮市場機制和經濟杠桿的作用gtyg;L#r#P!M~trWb。
3. speaking of (接過話頭引入新話題)說到…，談到…；
例句：Speaking of the fringe benefits and working conditions of that company, all the employees shut up their mouths.
說到那家公司的福利和工作條件，所有的雇員都閉口不談)UMnmoaEWdU6][y。
4. plug in 連接；
例句：He plugged in his guitar.
他連上了他的吉他8v][XUGEnn(P.。