1. He tried to buckle down to some work/study.
2. You'd better buckle down to some revision now.
3. I'd better buckle down to those reports.
4. You must just buckle down to the new job.
5. Now let's buckle down to the new project.
6. He won't buckle down to the job.
7. What we need to do now is buckle down to developing the productive forces faster through reform, keep to the socialist road and demonstrate by our achievements the superiority of socialism.
8. They will buckle down to negotiations over the next few months.
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9. He is in low spirits and won't buckle down to anything.
10. If individuals are forced to face the reality of starvation, everyone will buckle down to work.
11. After her teacher warned her that she might fail, Sue began to buckle down to her studies.