the bottom has fallen out (ze bótom has fóren aut)

Idiom Economics

意味

a situation in which something has suddenly failed or collapsed

何かが突然失敗したり崩壊したりした状況

例文

"The market for tech stocks has crashed; the bottom has fallen out."

"テクノロジー株の市場は崩壊した; 底が抜けた。"