to fall upon
[phrase form: fall]
01
偶然发现, 意外遇到
to encounter suddenly or unexpectedly
例子
As they explored the dense forest, they unexpectedly fell upon an ancient ruin.
当他们探索茂密的森林时，意外地遇到了一座古老的废墟。
02
陷入, 遭受
to experience or suffer from a particular situation or circumstance
例子
Families in the region began to fall upon hardships after the natural disaster struck.
自然灾害发生后，该地区的家庭开始陷入困境。
