重點講解：
1. sell on
轉賣；倒賣；
eg. Mr Farrier bought cars at auctions and sold them on.
法里爾先生拍得汽車后再將其轉手。
eg. The arms had been sold to a businessman; he sold them on to paramilitary groups.
武器出售給了一個商人，他又將其倒賣給了一些準軍事組織。
2. take back
退回；退還；歸還；
eg. If I buy something and he doesn't like it I'll take it back.
要是我買的東西他不喜歡的話，我就會去退貨。
eg. I went to the library and took your books back...
我去了圖書館，幫你把書還了。
eg. I once took back a pair of shoes that fell apart after a week.
有一次，我退了一雙剛穿一個星期就開裂的鞋。
3. get rid of
扔掉；丟棄；擺脫；甩掉；趕走；
eg. He believed that his manager wanted to get rid of him for personal reasons.
他認為經理是出于個人原因想開除他。
eg. She will have to get rid of the excess weight on her hips.
她得減去臀部多余的脂肪。