两种情形看起来有些相似，但实质却有很大区别——这种情况我们在日常生活中偶尔会遇到。用英语应该如何表达？ 1. There's a fine line between drinking socially and alcoholism. 喝酒应酬和嗜酒可是有区别的。 2. There's a fine line between helping your kids with their homework ...

Please explain “fine line to walk” in this sentence: Finding a balance between protecting our children and letting them find their own way is a fine line to walk. My comments: “Fine line to walk” here ...