slacken off造句怎麼寫

You shouldn't slacken off in your study.

He had worked without intermission for six months and now could slacken off for a holiday.

We've been really Busy, but things are starting to slacken off now.

Business in the small village usually slacken off during severe winters.

Redouble your efforts and not slacken off.

The demand for coal begins to slacken off in the spring.