hoarding and speculation的用法和樣例：
例句
- We must take strong measures against actions of hoarding and profiteering that upset the market.
我們必須嚴厲打擊囤積居奇，擾亂市場秩序的行為。 - The government's consumer watchdog accuses them of hoarding and speculation, complaining that they are selling under the counter to restaurants at a higher price.
而政府的消費者監督機構則指責他們囤積居奇，抱怨說他們正在暗地裡以更高價格向飯店銷售。
