built on the sand

• adj. 不稳固的(建立在不牢靠的基础上的)

built on the sand的用法和样例：

例句

用作形容词 (adj.)

1. The enemy coalition was unstable enough.
   敌人的联盟是很不稳固的。
2. Our finances were not stable in the past.
   过去的财政就是不稳固的。