scrap down的用法和樣例：
例句
- They have managed to pull down the old building.
他們已拆毀了那幢舊建築。 - The ship was broken up for scrap metal.
這艘船拆毀了當廢鐵用。 - Involve in WIP and production scrap control.
參與壞品數和生產報廢控制。 - I'll soon have to scrap this lawn mower,it's beyond repair and on its last legs.
不久將不得不把我這台割草機廢棄掉，因它已不能修理，即將報廢了。
