sliding down tram的用法和样例：
例句
- If you read any further all those years you spent admiring the machismo of supercars might just go down the drain.
如果再读下去你这些年对超级跑车男人气概的敬仰就会瞬间消失。 - It's the first step down a slippery slope of being manipulated with numbers and overpaying for your vehicle.
这项功能对于多用途跑车特别重要，因为他可以防止滚动翻转。
