level restriction 等级限制,水平限制
如：
Has these question primary cause is: First, is caused the philanthropy our countryeconomic development level restriction to develop slowly;
发生这些题目的主要原因是：第一,受我国经济发铺水平制约造成慈善事业发铺迟缓
《新英汉打字典》
望采纳 谢谢