to appear or happen gradually or to a limited degree from a higher level
They show the squid positioned in such a way that its big eye is usually looking upwards toward the dim sunlight that filters down into the deep water, while the smaller eye gazes downwards, looking upward
رخنه کردن
نفوذ کردن
تسری پیدا کردن به اقشار ضعیف تر، جریان یافتن به لایه های زیرین
