Before you rush to the pharmacy to buy sleep medications, try natural sleep therapies.

在你冲到药店去买睡眠药物前，试试看自然睡眠疗法。

youdao

Try the shoes on before you buy them.

鞋子要先穿上试一试再买。

《牛津词典》

Try it before you buy a coat.

买大衣前先试穿一下。

youdao

If you want to try before you buy, WoTc has made a sample chapter available for download.

FORBES: Shelly Mazzanoble Knows Dungeons & Dragons

Try before you buy - qualities like the shutter lag, LCD screen quality, general handling and button placement etc can only be determined by trying the camera out in a shop.

BBC: Tips for picking the right camera

Giving players the ability to try before you buy is always a good thing, but in this case especially, because the game has such an unusual flavor, it could provide vital information.

FORBES: Starting Your Carrier: Carrier Command Demo Released