“囤积居奇”正确的英文表达是 “hoard goods to drive up prices” ，也可表述为 “speculate in and profit from the hoarding of essential goods” 等类似表达，具体释义和用法如下：
“hoard goods to drive up prices”：
释义：直接点明了“囤积货物以抬高价格”的行为，其中“hoard”表示“囤积、积聚”，“drive up prices”表示“抬高价格”。
例句：Some unscrupulous merchants hoard goods to drive up prices during the epidemic, which has caused great harm to the market.（一些不法商贩在疫情期间囤积居奇，对市场造成了极大的危害。）
“speculate in and profit from the hoarding of essential goods”：
释义：更侧重于描述通过囤积生活必需品来投机获利的行为，“speculate in”表示“投机于……”，“profit from”表示“从……中获利”。
例句：The government is cracking down on those who speculate in and profit from the hoarding of essential goods.（政府正在打击那些囤积居奇、投机获利的人。）