Ever since he lost his job, he has been looking rather down at the heels.

自从他失业以来，他的样子总是那样邋遢。

《新英汉大辞典》

My shoes are badly worn down at the heels.

我的鞋后跟磨损得很厉害。

youdao

He walked at the other's heels with a swing to his shoulders, and his legs spread unwittingly, as if the level floors were tilting up and sinking down to the heave and lunge of the sea.

他跟在那人的后面走，双肩一摇一摆的，两条腿不知不觉地张开着，好像这平坦的地板正随着海浪的起伏和涌动忽儿上升，忽儿下沉似的。

youdao

The idea, apparently, is that lower prices will encourage elegant ladies to sport a chignon one week and a beehive the next, while those down at the heels might decide to have their shoes repaired more frequently.

ECONOMIST: The Dutch model (cont��d)

Last Oct. 23 Vital's boss, Donald Podrebarac , stepped up to the podium at the Friars Club, that wood-paneled, down-at-the-heels Manhattan townhouse where hall-of-fame comedians like David Letterman and Jerry Seinfeld subject fellow Friars to howlingly funny roasts.

FORBES: Have You Heard the One About the Anthrax Kit?

From here, it is a short stroll to bohemian-loving eating and drinking spots like Bar do Mineiro, a down-at-the-heels local favourite that serves classic Brazilian bistro fare.

BBC: Bohemian Santa Teresa