Joe has a bad back so we have a hard bed.

乔的背不好，所以我们睡硬板床。

《柯林斯英汉双解大词典》

The bed is too soft I prefer a hard bed.

床太软了，我宁可要一张硬床。

youdao

You should have acupuncture every other day. Sleep on a hard bed and rest well.

此外，您要隔日来针刺一次，睡硬板床，好好休息。

youdao

It's not really hard. You just make your bed neat, remember to stand up straight, and always answer every question with "Yes, Drill Sergeant."

VOA: standard.other

After you configure your backup, Google zips your data into an archive that you can download and store on a hard disk under your bed or in a bank vault in Geneva.

FORBES: How To Back Up All Your Google Data In 60 Seconds Or Less

Told from here, from this hard bench that is both bed and chair, table and couch, inside walls and bars painted a dark gray like a grim parody of jail, the story has a different ring than it would if I could tell it from the desk in my office.

NPR: Excerpt: 'The Practice of Deceit'

That night, as she lay in bed on her rock-hard mattress, Luda continued to think about Milena.

NEWYORKER: Luda and Milena