grow out of
1．develop from发展自
Most international firms have grown out of small family businesses．多数国际性公司是从小的家庭企业发展起来的。
2．arise or result from起因于
His illness grew out of his tendency to overwork．他的病是工作过度所致。
The accident grew out of his carelessness．这场事故是由于他粗心而造成的。
3．become too big or too old for太大或太老而不再适合于…
My son has grown out of his shoes；
I have to buy him new ones．我儿子已长大，穿不下这些鞋子了，我得给他买新的。
There is no sense in buying expensive clothes for children，as they soon grow out of them．给小孩买贵重的衣服划不来，因为他们很快就会长大穿不下了。
My daughter has grown out of these toys．我女儿已经长大，不再玩这些玩具了。
He has grown out of the bad habits of his boyhood days．他长大了，已经改掉了童年时代的一些坏习惯。