They saw some large letters in white paint.

他们看见了几个用白漆写的大大的字母。

《柯林斯英汉双解大词典》

See with how large letters I write unto you with mine own hand.

请看我亲手写给你们的字、是何等的大呢。

youdao

In large letters, alone on one entire page, you see: "If the NHS was performing at truly world-class levels we would save an extra 5,000 lives from cancer every year."

整整一页篇幅，一行行大号字赫然在目：“假如NHS达到真正的世界级水平，我们每年将多救治5000例癌症患者。”

youdao

The writing on the stone says in large letters: Norton the First, Emperor of the United States and Protector of Mexico.

VOA: special.2009.12.14

"The address is written in large black letters."

VOA: special.2009.12.26

All the functions are extremely easy to use thanks to extra-large buttons and extra-large letters.

ENGADGET: Third generation Smart Fortwo ditches Tesla powertrain, gains two wheeled cousin

The patients who respond the best can read large letters a few inches tall.

WSJ: The Quest to Create A Bionic Eye Gets Clearer

It estimated that half the amount spent by the average family on postal services was the cost of sending large letters and small parcels.

BBC: Price cap for parcels confirmed by mail regulator Ofcom