You need only to try on shoes with your feet to get the right size.

只要用你的脚去试试鞋的大小，不就可以了吗？

youdao

Nor did she tell him that sometimes she had had enough of helping people try on shoes all day.

她也没有告诉他，她有时一整天都忙着帮人们试鞋穿。

youdao

Try the shoes on before you buy them.

鞋子要先穿上试一试再买。

《牛津词典》

He hands me a discount card and suggests I try on a pair of running shoes on my way out.

FORBES: Magazine Article

They have embraced companies that serve them well, such as Zappos (an online shoe shop that lets you order, try on and return as many shoes as you like) and Southwest Airlines, a cheap but friendly carrier.

ECONOMIST: Schumpeter: The magic of good service | The

The privately held Las Vegas company (whose name comes from the Spanish word for shoe) gets raves from shoe lovers for its fast, free shipping--90% of orders arrive the next business day--and a 365-day return policy that allows footwear fans to order a bunch of shoes, try them on and return those that don't suit or fit.

FORBES: A Step Ahead