Definition
When children grow into clothes, they gradually reach a size where they can fit into them.
長大到適穿（衣服）
This shirt is too big now, but he will grow into it by next year.
這件襯衫現在太大了，但他明年就會穿得下了。
Her shoes are a bit loose now, but she will grow into them in a few months.
她的鞋子現在有點鬆，但幾個月後她就會穿得下了。
This jacket doesn't fit him right now, but I know he will grow into it.
這件夾克現在不合身，但我知道他會穿得下的。