step into the breach

US /stɛp ˈɪntu ðə briːtʃ/
UK /stɛp ˈɪntu ðə briːtʃ/
"step into the breach" picture
1.

mengambil alih, mengisi kekosongan

to take action when another person or group is unable to, or to fill a gap in a difficult situation

:
When the lead actor fell ill, his understudy had to step into the breach.
Ketika aktor utama sakit, pemeran penggantinya harus mengambil alih.
The volunteers had to step into the breach when the regular staff went on strike.
Para sukarelawan harus mengisi kekosongan ketika staf reguler mogok.