Translation of "eat away" into Persian

but he was eating away manfully, though there was a slight pucker about his mouth and he kept his eye fixed on his plate.

ولی لاری ظاهرا با وجودی که چین مختصری دور دهانش افتاده بود، با دهان پر مشغول خوردن بود و چشمش را به بشقابش دوخته بود.