The outer layers of the volcano were worn away, until the hardcore stood completely exposed.

火山的外层已经磨损殆尽，直到硬核层完全暴露在外。

youdao

The inscription on the coin had worn away.

铸在这枚硬币上的文字已磨平了。

《牛津词典》

The steps had been worn away by the feet of thousands of pilgrims.

成千上万的朝圣者把台阶踏得磨损了。

《牛津词典》

Gordon Watts says the sea,over time, may have worn away areas of land.

VOA: special.2009.08.17

Dental erosion involves demineralisation where teeth are attacked by acids and tooth enamel is consequently worn away.

BBC: Tea 'good for teeth'

In Japan, where Uniqlo has blanketed the countryside with more than 800 stores, some of the brand's luster has been worn away by strip-mall locations and humdrum atmospheres.

WSJ: This Man Wants to Clothe the Planet | Renegade

The square of his wallet had worn away the corduroy from one of the back pockets, as if he often wore these pants, and always with the wallet in that place.

NEWYORKER: Found Objects