fall through

1.The proposed amalgamation of the two institutes has mow fallen through.

这两个研究所打算合并的事现在已经落空了。

2.The plan fell through.

计划已经失败。

3.'I had fallen through a trapdoor of depression,' said Mark, who was fond of theatrical metaphors.

“我沉的活板门，”喜欢用夸张隐喻的迈克说。