won't last long
そう長くもたない
It won’t last much longer.
— REC / レック (2007)
アルトゥーロの肺に水がたまっている長くもたない
Arturo has fluid in his lungs. He won't last long.
— 雪山の絆 (2023)
私の貯金はとても少ないので、あまり長くもたないだろう。
I don't have much in savings, so it probably won't last very long.
長くもたない
It won't last long.