rampant speculation的用法和樣例：
例句
- Then stocks are permitted to sink to a level where hope gives way to despair and the most rampant bull becomes a bear and sells out with a loss.
在這之後股票開始墮落到一個可以使你的希望崩潰成絕望的水平上，最猖狂的瘋牛變成了狗熊讓你賣出就要承受損失。 - His speculation reduced him to beggary.
他的投機使他陷於赤貧。 - He ventured on a rash speculation.
他進行魯莽的投機。
