buckle down

US /ˈbʌk.əl daʊn/
UK /ˈbʌk.əl daʊn/
"buckle down" picture
1.

bekerja keras, bersungguh-sungguh

to start working seriously and with determination

:
It's time to buckle down and finish this project.
Sudah tiba masanya untuk bekerja keras dan selesaikan projek ini.
If you want to pass the exam, you need to buckle down and study.
Jika anda ingin lulus peperiksaan, anda perlu bekerja keras dan belajar.