Definition
A structure, plan, or system that is very fragile and likely to collapse or fail.
建在沙地上的墓墕
The company was built on shaky foundations; it’s a complete house of cards.
這家公司建立在搖搖欲墜的基礎上，完全就是一座紙牌屋。
Their alliance seems strong, but it's actually a house of cards, ready to collapse at any moment.
他們的聯盟看起來很牢固，但實際上是一座紙牌屋，隨時可能崩塌。
His detailed business plan is really just a house of cards; the slightest change could cause it to fail.
他詳細的商業計劃實際上是一座紙牌屋，任何微小的變化都可能導致它失敗。